KATIVA Brazilian Keratin Express Straightening Kit — Formaldehyde-Free Vegan System for Intensive Frizz Reduction, Up to 12 Weeks

KATIVA Brazilian Keratin Express Straightening Kit is a formaldehyde-free, vegan at-home system designed to reduce frizz and deliver smoother, shinier hair for up to 12 weeks when used with proper heat activation.

This complete kit pairs concentrated plant-based keratin with nourishing oils to tame coarse, textured or unruly hair without animal ingredients or added formaldehyde. It includes a clarifying shampoo, the concentrated smoothing treatment, a conditioning formula and a heat-protectant serum so you can follow a single, salon-inspired routine at home. Results depend on hair type and how closely the application and heat steps are followed.

How does this kit help control frizz and shape hair?

The formula combines a double dose of vegetal keratin with argan oil and shea butter to smooth the hair shaft and reduce surface irregularities that cause frizz. Heat activation when flat-ironing helps the treatment set, improving manageability and shine.

• Double vegetal keratin reinforces hair structure and supports smoother alignment.
• Argan oil and shea butter provide moisture, reducing puffiness and roughness.
• Heat-activated sealing creates longer-lasting straight appearance.

What makes this kit suitable for thick or resistant hair?

The concentrated smoothing treatment is formulated to deliver more pronounced straightening effects than lightweight serums, targeting coarser, highly textured hair. The kit’s step-by-step system clarifies, treats, conditions and protects so stronger results are achievable at home.

• Clarifying shampoo removes buildup so the treatment penetrates evenly.
• High-dose vegetal keratin helps resist curl rebound and reduce volume.
• Heat-protectant serum guards hair during the flat‑ironing step required for best results.

How long do results last and what affects duration?

When applied correctly and sealed with heat, many users see smoother, straighter-looking hair for up to 12 weeks. Longevity varies with natural hair texture, how often you wash, exposure to humidity and whether you use sulfate-free maintenance products.

• Proper flat-iron technique during application is essential for maximum duration.
• Avoiding strong sulfates in aftercare helps preserve the treatment longer.
• High humidity, frequent swimming or daily washing can shorten longevity.

How do I use the kit safely at home?

Follow the included step-by-step directions: start with the clarifying shampoo, apply the smoothing treatment section-by-section, rinse as instructed, condition, then blow-dry and flat-iron at the recommended temperature. Use the heat-protectant serum before final styling to minimize thermal stress.

• Perform a strand and allergy patch test before full application.
• Use a professional-grade flat iron and follow temperature guidance for your hair type.
• Work in small sections to ensure even application and sealing.

Who is this for: KATIVA Brazilian Keratin Express is designed for people with coarse, frizz-prone, very textured or resistant hair who want a stronger at-home straightening result without formaldehyde or animal-derived ingredients. It also suits anyone seeking a complete, salon-style kit that includes clarifying, treatment, conditioning and heat-protection steps. If you have chemically damaged or highly delicate hair, consult a professional before use and always follow safety instructions included with the kit.

Ingredients

Glyoxylic acid based straightening complex