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Description
Kostume Rio de Janeiro USA K. Fiber Acidifying pH 3.0 Treatment
Professional use only. This product is sold exclusively to licensed cosmetology professionals. A verified Beauty Pro account is required to purchase.
Bleach and color leave hair alkaline — pushed up to a pH of 9 or higher, with the cuticle swollen open. That's why hair feels rough and porous straight out of a service. This acidifying treatment brings it back down to 3.0, closing the cuticle and locking the service in.
Made in Brazil, where humidity, sun, and salt make hair repair a daily science rather than a seasonal fix. Shea butter and conditioning agents soften as the acid works, so the cuticle seals smooth rather than tight.
What it does
- Brings hair back to an acidic pH after color, bleach, or keratin
- Helps seal and tighten the cuticle for a smoother surface
- Helps hold color vibrancy between services
- Boosts shine and light reflection
- Leaves hair softer, more aligned, and easier to comb
Key ingredients you'll love
- pH 3.0 Acidifying System — counters the alkalinity left behind by chemical services
- Shea Butter — nourishes and softens as the cuticle closes
- Conditioning Agents — add slip so hair detangles without roughing the cuticle back up
Built for the backbar
- The finishing step after color, bleach, and highlights
- After keratin and chemical smoothing services
- Porous hair that feels rough or grabby
- Color clients whose color fades faster than it should
How to use
- After shampooing, spray strand by strand through the hair.
- Leave on 3 minutes.
- Rinse and finish as desired.
Or after rinsing the K. Fiber mask: spray over lengths and ends, then finish as desired — no second rinse needed.
Pro tip: Start at the mid-lengths and ends. That's where hair is most porous and where the pH swing does the most damage.
Pairs with the K. Fiber Reconstructing Repair Shampoo and Conditioner to complete the reconstruction system.
Not a Beauty Pro yet? Licensed stylists get wholesale pricing, professional-only products, and early access to new launches. Apply for your Beauty Pro account.
Description
Kostume Rio de Janeiro USA K. Fiber Acidifying pH 3.0 Treatment
Professional use only. This product is sold exclusively to licensed cosmetology professionals. A verified Beauty Pro account is required to purchase.
Bleach and color leave hair alkaline — pushed up to a pH of 9 or higher, with the cuticle swollen open. That's why hair feels rough and porous straight out of a service. This acidifying treatment brings it back down to 3.0, closing the cuticle and locking the service in.
Made in Brazil, where humidity, sun, and salt make hair repair a daily science rather than a seasonal fix. Shea butter and conditioning agents soften as the acid works, so the cuticle seals smooth rather than tight.
What it does
- Brings hair back to an acidic pH after color, bleach, or keratin
- Helps seal and tighten the cuticle for a smoother surface
- Helps hold color vibrancy between services
- Boosts shine and light reflection
- Leaves hair softer, more aligned, and easier to comb
Key ingredients you'll love
- pH 3.0 Acidifying System — counters the alkalinity left behind by chemical services
- Shea Butter — nourishes and softens as the cuticle closes
- Conditioning Agents — add slip so hair detangles without roughing the cuticle back up
Built for the backbar
- The finishing step after color, bleach, and highlights
- After keratin and chemical smoothing services
- Porous hair that feels rough or grabby
- Color clients whose color fades faster than it should
How to use
- After shampooing, spray strand by strand through the hair.
- Leave on 3 minutes.
- Rinse and finish as desired.
Or after rinsing the K. Fiber mask: spray over lengths and ends, then finish as desired — no second rinse needed.
Pro tip: Start at the mid-lengths and ends. That's where hair is most porous and where the pH swing does the most damage.
Pairs with the K. Fiber Reconstructing Repair Shampoo and Conditioner to complete the reconstruction system.
Not a Beauty Pro yet? Licensed stylists get wholesale pricing, professional-only products, and early access to new launches. Apply for your Beauty Pro account.