This shampoo transformed my thick, wavy hair into smooth, manageable locks effortlessly – no styling products needed!
As someone with extremely thick, wavy hair, this shampoo transformed my mane into perfectly straight, manageable locks that stay styled without products – life-changing results!
This is a review from Amazon.com about product:
OGX Brazilian Keratin Therapy Shampoo for Shiny Hair, Sulfate-Free, with Coconut Oil and Avocado Oil, 13 Fl Oz

I have extremely thick hair down to my collar. Before I used this, my hair was wavy and very unruly. But after using this my hair is extremely straight and stays combed back without any product. 10/10 would recommend.
Shampoo Basics & Tips
How This Shampoo Works for Thick, Unruly Hair
The reviewer mentions achieving straightened hair without styling products. This occurs through specific smoothing agents like keratin proteins that penetrate hair shafts to reduce frizz. Thick hair often requires hydrating ingredients (e.g., argan oil) to soften coarse strands while maintaining volume control.
Why Hair Stays Combable Without Product
Cuticle-smoothing formulas flatten hair's outer layer, reducing static and friction. Ingredients like amino acids help maintain this effect through multiple washes. For collar-length hair, this creates natural weight distribution that keeps styles intact.
Managing Different Hair Types
Thick hair (50-120μm strands) needs stronger surfactants than fine hair. Look for sulfate-free cleansers with coconut-derived bases that remove buildup without stripping natural oils. Wavy textures benefit from pH-balanced formulas (4.5-5.5) to prevent curl disruption.
Common Shampoo Concerns Addressed
Users often ask: "Will straightening shampoos damage hair?" Quality versions use heat-free smoothing through chemical bonds rather than harsh alcohols. For color-treated hair, ensure formulas contain UV filters and color-lock technology.
Enhancing Results Between Washes
Pair with cold water rinses to seal cuticles. Sleep on silk pillowcases to maintain straightness. Avoid over-brushing – wide-tooth combs preserve smoothness better than boar bristle brushes for thick hair types.
My hair breaks less with this shampoo, feels great and lathers well.
This shampoo reduces my hair breakage and loss, lathers nicely with a good scent, but doesn't help frizz in humidity.
I love that it lathers well and cleans thick curly hair effectively.
I found this shampoo ideal for thick curly hair as it lathers superbly and cleans thoroughly with a great scent and value.
I love how this shampoo improved my hair after a brief dry phase and smells great.
At first, my hair felt dry and odd, but after adjustment, this shampoo works wonders with a pleasant scent I adore daily.
I found the perfect 2-in-1 shampoo for gray hair that gives shine.
I love this 2-in-1 shampoo for gray hair because it makes my hair soft and shiny, saves time in my routine, and suits my active lifestyle, though I wish the bottle was larger.
This shampoo leaves my hair clean and conditioned with no heavy feeling.
This shampoo has kept my hair clean and smelling great for years, with Argan oil conditioning that feels light.
At 59, this shampoo makes my thinning hair soft and luxurious, and I love the conditioner too.
I love how this shampoo transforms my brittle hair to soft and luxurious at 59, and the conditioner works perfectly.
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I feared oily hair but got amazingly soft, lightweight locks that surprised me delightfully.
My thick, dry hair felt weighed down with stiff residue after poor lathering and distribution.
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