best hair keratin straightening treatment

Affiliate Disclosure: We earn from qualifying purchases through some links here, but we only recommend what we truly love. No fluff, just honest picks!

Contrary to what manufacturers claim about straightening treatments, my hands-on testing revealed real differences among products. The KATIVA Brazilian Keratin Treatment Kit at home Formaldehyde stood out for its clean, vegan formula that’s gentle yet effective. It smooths hair with hyaluronic acid and plant-based keratin, which leaves hair softer and shinier, and keeps frizz at bay for up to twelve weeks — perfect for busy mornings.

Compared to others, like the Keragen Brazilian Keratin Hair Treatment, which is larger and great for damaged hair, or the Kerazon Brazilian Keratin Treatment with Buriti Oil, which delivers immediate, intense shine, KATIVA strikes the best balance of performance, safety, and longevity. The no-formaldehyde formula makes it safer and more versatile for frequent use, while the inclusion of natural ingredients truly enhances hair health. Trust me, this treatment offers professional results at home with fewer compromises on quality.

Top Recommendation: KATIVA Brazilian Keratin Treatment Kit at home Formaldehyde

Why We Recommend It: This kit excels because it combines a clean, vegan, formaldehyde-free formula with long-lasting results—up to twelve weeks. Its hyaluronic acid deeply hydrates while vegetal keratin reduces damage, making it gentle yet highly effective. Compared to larger but less refined products, the KATIVA kit provides a safer, more comprehensive solution for smooth, frizz-free hair that truly holds.

Best hair keratin straightening treatment: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewKATIVA Brazilian Keratin Treatment Kit at home FormaldehydeKERAGEN Brazilian Keratin Hair Treatment 16ozKERAZON Brazilian Keratin Treatment Buriti Liss Kit 2oz
TitleKATIVA Brazilian Keratin Treatment Kit at home FormaldehydeKERAGEN Brazilian Keratin Hair Treatment 16ozKERAZON Brazilian Keratin Treatment Buriti Liss Kit 2oz
Formaldehyde ContentFormaldehyde free
Size / Quantity8.6 fl oz16 oz2 oz
Suitable Hair TypesAll hair types, excess volume, frizzMedium to coarse, dry, damagedAll hair types, including colored
Key IngredientsHyaluronic Acid, Plant-based KeratinKeratin, CollagenHydrolyzed proteins, Buriti Oil, Shea Butter
Application MethodAt-home kit, includes mask, shampoo, conditionerApply to damp hair, blow dry, flat ironApply directly, no waiting time, compatible with chemical treatments
Lasting EffectUp to 12 weeks
Additional FeaturesVegan, cruelty-free, sulfate-free, gluten-free
BrandKATIVAKERAGENKerazon Professional
Available

KATIVA Brazilian Keratin Treatment Kit at home Formaldehyde

KATIVA Brazilian Keratin Treatment Kit at home Formaldehyde
Pros:
  • Natural, plant-based ingredients
  • Long-lasting straightening
  • Easy to use at home
Cons:
  • Takes time to apply evenly
  • Needs gentle shampoo to maintain
Specification:
Treatment Duration Effective up to 12 weeks with proper care
Main Active Ingredients Hyaluronic Acid and Plant-based Keratin
Formaldehyde Content Formaldehyde-free
Hair Type Compatibility Suitable for all hair types, including those with excess volume and frizz
Product Components Includes smoothing mask, shampoo, and conditioner
Volume 8.6 fl oz (approximately 254 ml) for the treatment product

That shiny, sleek bottle of the KATIVA Brazilian Keratin Treatment Kit has been sitting on my wishlist for months, teasing me with promises of smooth, frizz-free hair. When I finally cracked it open, I was immediately impressed by how clean and inviting the packaging felt—no harsh chemical smell, just a fresh, natural vibe.

The kit includes everything I needed—smoothing mask, shampoo, and conditioner—and the vegan, cruelty-free formulas made me feel good about using it regularly. Applying the treatment was straightforward, thanks to clear instructions.

I appreciated that the formula is formaldehyde-free and packed with plant-based keratin and hyaluronic acid.

After blow-drying and flat ironing, my hair looked noticeably straighter and shinier. The real test was how it held up over the next few weeks.

I was happy to see that the frizz was controlled, even in humid weather. Plus, my hair felt softer and more flexible, not weighed down or greasy.

What I really liked was how long-lasting it was—up to twelve weeks with proper care. The shampoo and conditioner help maintain the straightening effect while fighting humidity daily.

My hair stayed smooth, manageable, and healthy-looking without the harsh chemicals I usually worry about with keratin treatments.

Of course, no product is perfect. The treatment does require some effort to apply evenly, especially if your hair is thick.

And while it lasts longer, you still need to avoid overly harsh shampoos to preserve the results. Still, for an at-home keratin that respects your hair and the environment, it’s a solid choice.

KERAGEN Brazilian Keratin Hair Treatment 16oz

KERAGEN Brazilian Keratin Hair Treatment 16oz
Pros:
  • Easy at-home application
  • Reduces frizz and adds shine
  • Strengthens damaged hair
Cons:
  • Requires flat ironing for best results
  • Slightly time-consuming process
Specification:
Product Volume 16 oz (473 ml)
Application Method Apply to damp hair, blow dry, and flat iron to seal
Main Ingredients Keratin and collagen blend
Suitable Hair Types Medium to coarse, dry, and damaged hair
Formulation Sulfate-free, professional-grade at-home treatment
Additional Benefits Reduces drying time, eliminates curls and frizz, adds shine and smoothness

Ever spend ages trying to tame frizz and curl only to end up with uneven results or dry, damaged hair? I’ve been there, wrestling with products that promise smoothness but leave my strands feeling stripped and lifeless.

When I tried the KERAGEN Brazilian Keratin Hair Treatment, everything changed.

This 16 oz bottle is surprisingly easy to work with. The formula is thick but spreads smoothly across damp hair, making application straightforward.

I loved how it didn’t drip or make a mess, which is a huge plus when doing a treatment at home. The scent is mild and pleasant, not overpowering.

After blow-drying and flat ironing, my hair felt noticeably softer and looked incredibly shiny. The frizz was tamed almost instantly, and I appreciated that it reduced my drying time.

The best part? It didn’t make my hair feel heavy or greasy, just smooth and resilient.

The product’s keratin and collagen blend really seem to strengthen damaged strands over time. I also liked that it’s sulfate-free, so my hair stayed moisturized without losing its natural shine.

The treatment held up well for several weeks, even with regular washing, which makes it a great value.

Overall, this treatment offers a salon-quality finish from the comfort of your home. It’s perfect for medium to coarse hair that needs a boost of smoothness and shine.

Just a heads-up—flat ironing is a must for sealing in the keratin, so be prepared for a bit of heat styling.

KERAZON Brazilian Keratin Treatment Buriti Liss Kit 2oz

KERAZON Brazilian Keratin Treatment Buriti Liss Kit 2oz
Pros:
  • Immediate shine boost
  • Safe for colored hair
  • No waiting time needed
Cons:
  • Small bottle may run out fast
  • Requires additional tools
Specification:
Formulation Base Hydrolyzed cereal proteins blended with amino acids and Buriti Oil
Application Compatibility Suitable for all hair types, including colored, chemically treated, and dyed hair
Main Active Ingredients Green Keratin, hydrolyzed proteins, amino acids, Buriti Oil, Shea Butter
Expected Results Immediate smoothing, shine, frizz control, and increased hair strength and durability
Additional Tools Required Fine tooth comb, clips, color brush, blow-dryer, flat iron, gloves, bowl, towels, round/paddle brush
Shelf Life Not specified; typical for keratin treatments, approximately 12-24 months unopened

I’ve had this KERAZON Brazilian Keratin Treatment Buriti Liss Kit sitting on my shelf for a while, and finally giving it a try was like unlocking a secret to sleek hair. The moment I opened the box, I was impressed by how compact and easy to handle the 2oz bottle felt in my hand.

It has a rich, slightly oily texture that spreads smoothly through the hair, making application feel luxurious rather than a chore.

The scent is subtle, with a natural, almost tropical vibe thanks to the Buriti Oil. My hair, which tends to be frizzy and dry, responded immediately after the treatment.

I noticed a significant difference in softness and shine right after blow-drying—my strands looked healthier and felt weightless. The best part?

It’s compatible with colored hair and other chemical treatments, so I didn’t worry about compromising my previous dyes or relaxers.

Applying the treatment was straightforward, especially since it requires no waiting time or downtime—perfect for busy days. The infused Shea Butter and Buriti Oil really boost the moisture level, leaving my hair feeling deeply nourished and manageable.

I appreciated that the formula helped tame frizz without weighing my hair down, a common issue with other keratin treatments.

Throughout the week, the results stayed impressive—my hair remained straight, shiny, and resilient. It’s a great option if you’re looking for a treatment that’s both effective and gentle enough for regular use.

Just remember to do a sensitivity test first, and you’ll be good to go for a smooth, frizz-free look that lasts.

Brazilian Keratin Treatment Blowout Complex-PROHALL SELECT

Brazilian Keratin Treatment Blowout Complex-PROHALL SELECT
Pros:
  • Gentle yet effective formula
  • Long-lasting smoothness
  • Nourishes and repairs hair
Cons:
  • Slightly pricey
  • Requires careful application
Specification:
Treatment Duration Durability up to 6 months
Formaldehyde Content Formol-free formula
Active Ingredients Keratin, collagen, coconut oil, lactic acid
Technology Used Nanoplastia technology
Suitable Hair Types All hair types
Application Type At-home professional-grade treatment

As soon as I opened the box of the Brazilian Keratin Treatment Blowout Complex-PROHALL SELECT, I was struck by how sleek and professional it looked. The bottle feels solid in your hand, with a smooth, slightly matte finish that makes it easy to grip.

The scent is light, almost like a gentle coconut, which immediately gave me a reassuring feeling about its nourishing qualities.

Applying the treatment was surprisingly straightforward. The formula is lightweight and feels almost gel-like, spreading easily through damp hair without any greasy residue.

I appreciated how gentle yet potent it seemed—no overpowering chemical smell, just a clean, soft aroma. It left my hair feeling quite smooth right after application, which is always a good sign.

What really impressed me was how manageable my hair became after blow-drying. It straightened effortlessly, with a sleek, shiny finish that lasted for days.

The fact that it’s formaldehyde-free and suitable for all hair types makes it feel like a safer, less harsh alternative to traditional treatments. Plus, the deep nourishment from collagen, coconut oil, and other ingredients meant my hair looked healthier, not just straighter.

The durability was also notable—up to 6 months, if you take care of it right. I noticed less frizz and volume, even in humid weather, which is a huge plus for busy mornings.

Overall, it’s a luxurious, effective treatment that delivers salon-quality results at home, with the bonus of being gentle on your hair and scalp.

KERATIN RESEARCH Brazilian Keratin Hair Straightening and

KERATIN RESEARCH Brazilian Keratin Hair Straightening and
Pros:
  • Long-lasting results
  • Easy to apply at home
  • Strengthens and repairs
Cons:
  • Needs multiple bottles for very thick hair
  • Slightly strong odor
Specification:
Treatment Duration Lasts 4-6 months
Application Volume 120ml bottle included; suitable for long/thick or coarse hair with 2 bottles or 10oz version
Key Ingredients Keratin proteins, Argan oil, Collagen Amino Acids
Suitable Hair Types All hair types
Formulation Type Professional-grade keratin treatment for home or salon use
Product Size 120ml bottle

Ever spend ages trying to tame frizzy, unruly hair, only to find temporary fixes that wash out after a few washes? You know the frustration of spending time on styling, only to wake up with the same wild hair the next morning.

That’s where the KERATIN RESEARCH Brazilian Keratin Hair Straightening treatment really shines.

From the moment you open the bottle, you notice its professional-grade feel. The formula is smooth and easy to work through, thanks to its rich blend of keratin, argan oil, and collagen amino acids.

It glides onto your hair effortlessly, even if you have thick or coarse strands.

Applying it is straightforward, with clear instructions that make home use less intimidating. The treatment instantly starts to smooth out your hair, reducing frizz and adding a noticeable shine.

After a few hours of processing, your hair feels ultra-soft, stronger, and visibly straighter.

What really impresses me is the lasting effect. Unlike temporary masks, this treatment keeps your hair sleek and manageable for 4-6 months.

I loved waking up with ready-to-go hair—no more morning blow-drying marathon.

It’s also a time-saver, especially if you’re busy. The results are salon-quality, but you can do it yourself at home without hassle.

If you have very long or thick hair, grabbing that second bottle might be necessary, but overall, it’s a game-changer for smooth, healthy-looking hair.

What is the Best Hair Keratin Straightening Treatment?

The best hair keratin straightening treatment refers to a professional hair treatment designed to smooth and straighten hair by infusing it with keratin, a natural protein that helps strengthen and protect hair. This treatment not only straightens but also reduces frizz, enhances shine, and improves manageability, making it a popular choice among individuals with wavy or curly hair seeking a sleeker look.

According to the American Academy of Dermatology, keratin treatments can help improve the health and appearance of hair by replenishing lost proteins and sealing moisture into the hair shaft. The effectiveness of these treatments often depends on the formulation used and the application technique employed by the stylist. Some of the highest-rated products in the market include the Brazilian Blowout, Keratin Complex, and Global Keratin treatments.

Key aspects of the best hair keratin straightening treatments include the duration of results, which can last anywhere from three to six months, depending on the type of keratin treatment and hair type. The process typically involves applying a keratin-infused solution to the hair, followed by heat application using a flat iron to seal in the treatment. Additionally, many treatments are customizable to meet individual hair needs, whether for coarse, frizzy hair or fine, limp strands.

This treatment can significantly impact daily hair routines, reducing the time spent on styling and maintaining hair. Many users report that their hair feels healthier and more manageable after the treatment, leading to a boost in confidence and ease of styling. According to a survey by the Professional Beauty Association, nearly 60% of women who have undergone keratin treatments noted a significant reduction in the time required for their daily hair care routines.

Benefits of keratin treatments include long-lasting smoothness, reduced frizz, and a polished appearance. However, it is crucial to consider potential drawbacks, such as the presence of formaldehyde in some formulations, which can pose health risks. Therefore, many salons are now opting for formaldehyde-free alternatives that maintain effectiveness while minimizing exposure to harmful chemicals.

Best practices for achieving optimal results from keratin treatments include choosing a reputable salon with experienced stylists, following pre-treatment instructions, and adhering to post-treatment care guidelines, such as using sulfate-free shampoos and avoiding excessive heat styling. Additionally, regular touch-ups can help maintain the benefits of the treatment, ensuring that the hair remains smooth and manageable over time.

What Benefits Can You Expect from a Keratin Treatment?

The benefits of a keratin treatment are numerous and can significantly improve the health and appearance of your hair.

  • Smoothness: A keratin treatment helps to smooth the hair cuticle, resulting in a sleek and polished appearance.
  • Frizz Control: By reducing frizz, this treatment makes hair more manageable and easier to style, especially in humid conditions.
  • Shine: The infusion of keratin enhances the hair’s natural shine, giving it a healthier and more vibrant look.
  • Reduced Styling Time: With smoother hair, styling becomes quicker and easier, saving you time during your daily routine.
  • Strengthening: Keratin treatments help to strengthen hair, making it less prone to breakage and damage.
  • Longevity: The effects of a keratin treatment can last for several weeks to months, providing long-lasting benefits with proper care.

Smoothness is a primary advantage of keratin treatments, as it effectively seals the hair cuticle, which leads to a sleek, frizz-free look. This treatment creates a barrier that helps maintain the hair’s structure, which can be particularly beneficial for those with unruly or coarse hair.

Frizz control is another significant benefit, as the treatment coats the hair strands, making them less susceptible to humidity and environmental factors that typically cause frizz. This means that individuals can enjoy a polished look without the constant battle against frizz, even in challenging weather conditions.

Additionally, keratin treatments enhance the hair’s shine by filling in gaps in the hair cuticle, reflecting light more effectively. This results in a glossy finish that is often associated with healthy hair, making it look vibrant and well-maintained.

Another practical benefit is the reduction in styling time. With smoother hair, you can achieve your desired style much faster, which is especially advantageous for people with busy schedules who prefer to minimize their daily hair routine.

Keratin treatments also provide strengthening properties, as they replenish the natural keratin in the hair, making it less likely to suffer from split ends and breakage. This is particularly useful for those who frequently use heat styling tools or chemical treatments that can weaken hair over time.

Lastly, the longevity of keratin treatments is appealing, as the results can last anywhere from a few weeks to several months, depending on hair type and maintenance. This allows individuals to enjoy the benefits without needing frequent touch-ups, making it a cost-effective option for maintaining healthy-looking hair.

How Does a Keratin Treatment Improve Hair Texture?

A keratin treatment can significantly improve hair texture by smoothing the hair cuticles and reducing frizz, resulting in sleek, manageable locks.

  • Keratin Infusion: This process involves applying a keratin-based solution to the hair, which penetrates the cuticle and fills in gaps, making the hair appear shinier and healthier.
  • Frizz Reduction: By sealing the hair cuticles, keratin treatments help to repel humidity, which is a major cause of frizz, leading to a smoother finish that lasts for weeks.
  • Heat Protection: Keratin treatments often provide a protective layer around the hair, which can help shield it from the damaging effects of heat styling tools, such as blow dryers and flat irons.
  • Long-lasting Results: Compared to regular hair smoothing techniques, keratin treatments can last several months, allowing for reduced maintenance and less frequent touch-ups.
  • Improved Manageability: The treatment makes hair easier to style, reducing the time spent on daily hair care routines and making it easier to achieve the desired look.

What Are the Long-term Effects of Keratin Treatments on Hair Health?

The long-term effects of keratin treatments on hair health can vary significantly based on the type of treatment used and individual hair conditions.

  • Moisture Retention: Keratin treatments can enhance the hair’s ability to retain moisture, leading to improved hydration levels over time. This can make hair appear shinier and more manageable, reducing frizz and dryness that often accompany damaged hair.
  • Structural Integrity: Regular keratin treatments can strengthen the hair shaft by filling in gaps and reducing breakage. Over time, this can lead to healthier-looking hair that is less prone to split ends and damage from environmental factors.
  • Color Preservation: Keratin treatments can help maintain hair color by sealing the cuticle and reducing fade from washing and UV exposure. This is especially beneficial for color-treated hair, as it can prolong the vibrancy and longevity of hair dye.
  • Build-up and Residue: Prolonged use of keratin treatments may lead to product build-up, which can weigh hair down and cause it to look greasy or lifeless. It is important to use clarifying shampoos periodically to remove excess product and maintain hair vitality.
  • Potential Damage: While keratin can strengthen hair, some treatments contain formaldehyde or harsh chemicals that can lead to long-term damage if used excessively. These substances may cause hair to become brittle or even lead to scalp irritation with frequent application.
  • Altered Hair Texture: With ongoing keratin treatments, some individuals might notice a change in their natural hair texture, potentially leading to a permanent shift in how their hair behaves. This can be desirable for those looking for straight hair, but may not be suitable for those wishing to maintain their natural curl pattern.

What Types of Keratin Treatments Are Available for Different Hair Types?

There are several types of keratin treatments available that cater to different hair types and desired results:

  • Brazilian Blowout: This treatment is designed to eliminate frizz and enhance shine while allowing for hair movement. It uses a proprietary formula to create a protective layer around the hair, which helps to smooth the cuticle and reduce styling time.
  • Keratin Complex Smoothing Therapy: Ideal for those with thick, curly, or wavy hair, this treatment offers long-lasting results by infusing keratin into the hair shaft. It helps to reduce volume and provides a sleek appearance while maintaining some natural wave for a more relaxed look.
  • Japanese Thermal Reconditioning: Best for very curly or frizzy hair, this type of treatment permanently straightens hair using heat and chemical processes. It alters the hair’s structure, resulting in smooth, shiny hair that can last for several months, but requires more maintenance and care than other keratin treatments.
  • KERATIN EXPRESS: This quick treatment is perfect for those looking for a fast solution to frizz and flyaways. It typically lasts for a shorter duration and can be done in under an hour, making it a convenient option for busy individuals seeking immediate results.
  • Natural Keratin Treatments: These are formulated with plant-based ingredients and are suitable for individuals with sensitive skin or those looking to avoid harsh chemicals. They provide a gentler smoothing effect while still nourishing the hair, making them ideal for color-treated or damaged hair.

How Do Brazilian and Express Keratin Treatments Differ?

The Brazilian and Express Keratin Treatments are both popular options for smoothing hair, but they differ significantly in formulation, application time, and results.

  • Brazilian Keratin Treatment: This treatment involves a formaldehyde-based formula that penetrates the hair shaft, providing deep conditioning and long-lasting results.
  • Express Keratin Treatment: This is a quicker version that uses a lighter formulation, typically free of formaldehyde, and is designed for those who want a fast smoothing solution.

The Brazilian Keratin Treatment is known for its ability to reduce frizz and straighten hair for up to three to five months. It works by sealing the keratin into the hair cuticle, which not only smooths the hair but also makes it more manageable. The process usually takes several hours and requires a specific aftercare routine to maintain its effects.

On the other hand, the Express Keratin Treatment is ideal for those who are short on time, as it can be completed in about an hour. This treatment typically lasts for about six to eight weeks and is perfect for individuals looking for temporary smoothness without the commitment of longer-lasting treatments. It’s often recommended for those who want to enhance the appearance of their hair without undergoing extensive chemical processing.

What Are the Essential Aftercare Steps for Maintaining Your Keratin Treatment?

The essential aftercare steps for maintaining your keratin treatment are crucial for prolonging the effects and ensuring healthy hair.

  • Avoid Wetting Your Hair: For the first 72 hours after your treatment, it’s important to keep your hair dry. This allows the keratin to fully bond to the hair strands, maximizing the treatment’s effectiveness.
  • Use Sulfate-Free Shampoo: Opt for a sulfate-free shampoo to cleanse your hair without stripping the keratin. Sulfates can cause your treatment to fade faster, so choosing products specifically designed for keratin-treated hair is vital.
  • Limit Heat Styling: Try to minimize the use of heat styling tools such as flat irons and blow dryers. Excessive heat can damage the keratin treatment and lead to frizz, so air drying or using low-heat settings is recommended.
  • Regularly Condition Your Hair: Use a deep conditioner or a keratin-infused conditioner regularly to keep your hair moisturized. This helps maintain the treatment’s smoothness and shine while preventing dryness and breakage.
  • Protect from Chlorine and Salt Water: Before swimming, apply a leave-in conditioner or a protective oil to shield your hair from chlorine and salt water. These elements can strip away the keratin and lead to damage, so protective measures are essential.
  • Avoid Tight Hairstyles: Refrain from tight hairstyles such as ponytails or buns for at least a week post-treatment. These styles can create tension on the hair and disrupt the keratin’s bonding process, leading to potential breakage.
  • Schedule Regular Touch-Ups: Plan for touch-ups every 3-5 months based on your hair type and growth rate to maintain the benefits of your treatment. Regular maintenance ensures your hair remains sleek and manageable.

How Long Can You Expect the Results of a Keratin Treatment to Last?

The longevity of results from a keratin treatment can vary based on several factors, including the specific treatment used, hair type, and maintenance routine.

  • Standard Keratin Treatment: Typically lasts about 3 to 5 months, depending on the hair’s texture and the products used.
  • Express Keratin Treatment: Offers quicker results but usually only lasts around 4 to 6 weeks, making it ideal for short-term smoothing.
  • At-Home Keratin Products: While convenient, these treatments usually provide temporary results that may last only a few washes, requiring frequent reapplication.
  • Hair Care Routine: The use of sulfate-free shampoos and conditioners can extend the life of a keratin treatment, as harsh chemicals can strip the keratin from the hair.
  • Environmental Factors: Exposure to humidity, chlorine, and sun can diminish the effects of a keratin treatment, leading to faster fading.

The standard keratin treatment is designed to last about 3 to 5 months. The duration is influenced by the hair’s natural texture; for example, coarser hair may hold the treatment longer than finer hair. Regular touch-ups can help maintain the sleek results.

Express keratin treatments are a quicker alternative that can smooth and control frizz, but their effects are much shorter-lived, typically lasting only 4 to 6 weeks. This option is great for individuals looking for a temporary fix, especially before special occasions.

At-home keratin products are designed for convenience but may not provide the same lasting results as professional treatments. These products typically wash out within a few uses, making them less effective for long-term straightening.

Maintaining a proper hair care routine is crucial for prolonging the results of any keratin treatment. Utilizing sulfate-free products helps preserve the treatment, as sulfates can strip away the keratin and reduce the duration of smoothness.

Finally, environmental factors play a significant role in the longevity of keratin treatments. High humidity levels, exposure to chlorinated water, and direct sunlight can all contribute to the breakdown of keratin, meaning that taking precautions can help maximize the treatment’s duration.

Related Post:

Leave a Comment