Smoothing Protein Kit 3x1L - Cadiveu Brasil Cacau is the complete Smoothing Protein system in one set, built for thick, coarse and resistant hair: the glyoxylic-acid smoothing reinforced with sugarcane cysteine that relaxes the bulk the lighter systems leave behind. The set pairs it with the Step 1 Anti-Residue Shampoo that clarifies and preps, and the Step 3 Deep Conditioning Mask that seals and hydrates after the iron, all in full-size 1L bottles, priced below the three bought separately. For professional use only.

Why the Smoothing Protein Kit

Smoothing Protein is the strong-hold member of the Brasil Cacau smoothing systems: a glyoxylic-acid treatment reinforced with sugarcane cysteine, made for the thick, coarse and resistant hair the colour-safe and vegan systems are too gentle for. The kit puts the full service in one box: the Smoothing Protein smoothing at Step 2, the Anti-Residue Shampoo at Step 1 that clarifies and opens the cuticle, and the Deep Conditioning Mask at Step 3 that seals and rehydrates after the heat. Each step is built to work with the next, priced below the three bottles separately, so one purchase covers a full head from clarifying to sealing. It is the choice when a client's hair is dense and hard to relax and a natural-looking straight finish is the goal rather than the colour protection or vegan formula the other systems lead with.

Key Ingredients

The smoothing active is glyoxylic acid, the second ingredient on the Smoothing Protein list, which relaxes the hair as it is dried and ironed. There is no formaldehyde and no formaldehyde-releasing preservative in the treatment, so the smoothing chemistry is the acid, not a donor. Working with it, sugarcane cysteine (Saccharum Officinarum Extract and Cysteine HCl) reinforces the protein structure, cocoa (Theobroma Cacao) seed butter and coconut (Cocos Nucifera) oil condition the fibre, and panthenol adds moisture; sericin, a silk protein, is why the treatment is not vegan. The Step 1 shampoo cleans deep on an alkaline pH to open the cuticle so the product takes evenly, and the Step 3 mask carries hydrolyzed keratin, cocoa butter and D-Panthenol to seal and rehydrate after the heat.

What to Expect

Off the iron the hair is visibly straighter, smoother and calmer, with dense bulk and frizz pulled down, while the finish stays natural-looking rather than poker-flat. Because the result is set under heat and sealed with the Step 3 mask, it holds through washing for 3 to 6 months, depending on how the hair is cared for at home, and a sulfate-free routine keeps it looking fresh for longer.

Who It Is For

• Thick, coarse, dense or resistant hair that lighter smoothings cannot relax
• Very frizzy or high-volume hair that needs strong, lasting control
• Salons that want the complete strong-smoothing system in one set, at a saving

Who It Is Not For

• Extremely damaged hair, which the label rules out until the fibre is back in condition
• Fine, coloured or bleached hair the gentler Eco Keratin system suits better
• Hair that already falls straight from a brush and a quick blow-dry

Professional tip: keep the treatment half a centimetre off the scalp and work in fine sections so every strand is coated evenly, then let the strand test set your iron temperature and pass count rather than defaulting to the maximum. On dense, resistant hair take thinner sections and a firmer comb-through so the product reaches through the bulk.

How to Use

This is the full Smoothing Protein protocol across the three steps in the set, written out and explained. Run a sensitivity and strand test first: the strand test sets the exact iron temperature and pass count for the hair in front of you.

1. Clarify (Step 1). Wash with the Anti-Residue Shampoo twice, pausing 5 minutes on the second wash, then rinse and dry 100%.
2. Section. Divide the hair into 6 parts.
3. Apply (Step 2). Apply Smoothing Protein with a brush half a centimetre from the root, avoiding the scalp.
4. Distribute. Comb through with a fine comb so every strand is coated.
5. Process. Leave it to act for up to 60 minutes.
6. Rinse partially. Rinse out about 30%, removing the excess product only.
7. Dry. Dry 100%.
8. Iron. Flat-iron 15 to 20 passes at the root and length, fewer at the ends according to the integrity of the hair, at 180 to 230 degrees Celsius per the strand test.
9. Finish (Step 3). Rinse, then work the Deep Conditioning Mask through for 5 to 10 minutes to seal and hydrate, rinse and finish.

Where It Fits in the Brasil Cacau Range

The Smoothing Protein Kit is the strong-smoothing system in the Brasil Cacau smoothing systems: reach for it on thick, coarse and resistant hair. For coloured or fine hair the Eco Keratin Kit is the colour-safe system; for a vegan smoothing the BTX Vegan Kit; and where reconstruction is the goal the Thermal Reconstruction Kit. All four kits share the same Step 1 and Step 3. Keep the result at home with the Brasil Cacau home care.

In Short

• The complete Smoothing Protein system in one set: Steps 1, 2 and 3 in full-size 1L bottles
• The glyoxylic-acid smoothing reinforced with sugarcane cysteine, built for thick, coarse and resistant hair; driven by the acid, not by formaldehyde
• Straight, frizz-controlled hair that holds 3 to 6 months with aftercare; sealed at 180 to 230 degrees
• Priced below the three products separately; professional use only, not vegan