KCB PROFESSIONAL Brazilian Keratin 1-Step At-Home Kit — 3.38 fl oz, Formaldehyde-Free Smoothing & Frizz Control

This salon-grade formula is designed for use at home to temporarily straighten hair and control frizz while delivering protein support to help hair appear healthier. The kit targets damaged, frizzy, or hard-to-manage strands and promises smoother, glossier results that last for weeks with proper care. It is vegan-friendly, cruelty-free and free of formaldehyde, silicones, parabens and dyes.

How quickly will I see smoother, frizz-free hair?

Results are visible immediately after the treatment is applied and sealed with heat; hair becomes noticeably smoother and easier to comb. Over the following days the effect settles in, and with recommended aftercare the smoothing can last several weeks.

• Immediate smoothing once treatment is sealed with a flat iron
• Frizz control that improves over the first 48–72 hours
• Up to 8–12 weeks of straighter appearance with proper maintenance

Is this safe for colored or damaged hair?

The protein-enriched formula is created to strengthen and add manageability to chemically treated or heat-damaged hair without adding harsh ingredients. Because it is free from formaldehyde and common harsh additives, it’s suitable for many color-treated routines—but always test a small section first.

• Protein support helps improve texture and shine
• Formaldehyde-, paraben- and silicone-free for gentler use
• Patch test recommended for bleached or highly processed hair

How easy is the at-home application process?

The kit follows a one-step protocol intended for non-professional application, with no waiting time or extended restrictions after use. The system is applied, combed through, and sealed with a flat iron to lock in the smoothing effect—afterwards you can return to your normal activities immediately.

• Simple one-step application—apply, comb, and heat-seal
• No mandatory waiting period; normal activities may be resumed after treatment
• Instructions designed for all hair textures and lengths

What aftercare keeps results lasting longer?

Using sulfate-free shampoos and limiting frequent washing will extend the smoothing and frizz-control benefits. Gentle styling, minimal heat, and protective products designed for keratin-treated hair help preserve results up to several months.

• Use sulfate- and salt-free cleansers to protect the treatment
• Avoid excessive chlorine and prolonged sun exposure without protection
• Touch-up treatments or trims maintain sleek appearance

Who is this for: KCB PROFESSIONAL Brazilian Keratin is aimed at people seeking salon-quality smoothing at home—those with frizzy, unruly, heat- or chemically-damaged hair who want improved manageability and a straighter look without formaldehyde or heavy silicones. It’s suitable for all hair types, including color-treated hair, when used as directed and preceded by a small patch test for highly processed strands.