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Description
K. Fiber Repair 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, with the cuticle swollen open and chemical residue still sitting in the fiber. That's why hair feels rough and porous straight out of a service, and why color starts fading before the client's next appointment.
Acidificante pH 3.0 is the correction. Designed for professional hairdressers, it realigns the cuticle, neutralizes chemical residue, and helps prevent oxidation — while delivering moisture, strength, smoothness and shine. It's the step between the service and the blow-dry.
Made in Brazil, where humidity, sun, and salt make hair repair a daily science rather than a seasonal fix.
What it does
- Returns hair to an acidic pH after color, bleach, or chemical services
- Helps realign and seal the cuticle for a smoother surface
- Neutralizes chemical residue left behind by the service
- Helps prevent oxidation in freshly processed hair
- Offers UV and thermal protection
- Boosts shine and light reflection
- Leaves hair softer, more elastic, and easier to comb
Key ingredients you'll love
- pH 3.0 Acidifying System — glycolic and lactic acids counter the alkalinity a chemical service leaves behind
- Hydrolyzed Keratin Protein — amino-acid rich, helps strengthen and repair while improving manageability
- Hydrolyzed Silk Protein (Sericin) — absorbs into the fiber to improve moisture balance, softness, and elasticity
- Hydrolyzed Wheat Protein — helps strengthen the shaft and minimize breakage while adding shine and body
- Creatine — strengthens hair structure and enhances elasticity in chemically treated hair
- Hyaluronic Acid — a humectant that attracts and holds moisture, improving texture and reducing frizz
- D-Panthenol (Provitamin B5) — boosts hydration, manageability, and shine
- Shea Butter (Butyrospermum Parkii) — rich in fatty acids; deeply hydrates, softens, detangles, and smooths
Rounded out with castor oil, coconut oil, palm kernel oil, soybean seed extract, and rice extract.
Built for the backbar
- The finishing step after color, bleach, and highlights
- After chemical smoothing and other alkaline services
- Porous hair that feels rough or grabby out of the bowl
- Color clients whose color fades faster than it should
- Available in a 1 L backbar size and a 300 ml spray for the station
How to use
- After shampooing, spray strand by strand through the hair.
- Leave on 3 minutes.
- Rinse and finish as desired.
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
K. Fiber Repair 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, with the cuticle swollen open and chemical residue still sitting in the fiber. That's why hair feels rough and porous straight out of a service, and why color starts fading before the client's next appointment.
Acidificante pH 3.0 is the correction. Designed for professional hairdressers, it realigns the cuticle, neutralizes chemical residue, and helps prevent oxidation — while delivering moisture, strength, smoothness and shine. It's the step between the service and the blow-dry.
Made in Brazil, where humidity, sun, and salt make hair repair a daily science rather than a seasonal fix.
What it does
- Returns hair to an acidic pH after color, bleach, or chemical services
- Helps realign and seal the cuticle for a smoother surface
- Neutralizes chemical residue left behind by the service
- Helps prevent oxidation in freshly processed hair
- Offers UV and thermal protection
- Boosts shine and light reflection
- Leaves hair softer, more elastic, and easier to comb
Key ingredients you'll love
- pH 3.0 Acidifying System — glycolic and lactic acids counter the alkalinity a chemical service leaves behind
- Hydrolyzed Keratin Protein — amino-acid rich, helps strengthen and repair while improving manageability
- Hydrolyzed Silk Protein (Sericin) — absorbs into the fiber to improve moisture balance, softness, and elasticity
- Hydrolyzed Wheat Protein — helps strengthen the shaft and minimize breakage while adding shine and body
- Creatine — strengthens hair structure and enhances elasticity in chemically treated hair
- Hyaluronic Acid — a humectant that attracts and holds moisture, improving texture and reducing frizz
- D-Panthenol (Provitamin B5) — boosts hydration, manageability, and shine
- Shea Butter (Butyrospermum Parkii) — rich in fatty acids; deeply hydrates, softens, detangles, and smooths
Rounded out with castor oil, coconut oil, palm kernel oil, soybean seed extract, and rice extract.
Built for the backbar
- The finishing step after color, bleach, and highlights
- After chemical smoothing and other alkaline services
- Porous hair that feels rough or grabby out of the bowl
- Color clients whose color fades faster than it should
- Available in a 1 L backbar size and a 300 ml spray for the station
How to use
- After shampooing, spray strand by strand through the hair.
- Leave on 3 minutes.
- Rinse and finish as desired.
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.