Sarah K Carnival Shampoo – Sulfate-Free Post-Chemical Nourishing Shampoo | 300ml

Sarah K Carnival Shampoo – Sulfate-Free Post-Chemical Nourishing Shampoo

A professional-grade maintenance shampoo from Sarah K, the Brazilian haircare brand trusted in salons across Brazil. The Carnival Shampoo is formulated specifically for hair that has undergone chemical treatments: Brazilian protein, keratin smoothing, relaxers, bleaching, or coloring. Its pH of 5.0–5.5 is calibrated to cleanse without disrupting the scalp’s natural acid mantle or stripping the results of chemical treatments. Sulfate-free, safe for color-treated and chemically processed hair. Pairs with the Carnival Conditioner (pH 3.0–3.5) for a complete post-chemical wash routine.

Shampoo pH vs Conditioner pH — why both matter

The Carnival system uses two different pH levels intentionally. The shampoo at pH 5.0–5.5 cleanses at a level close to the scalp’s natural pH, removing impurities without over-opening the cuticle. The conditioner at pH 3.0–3.5 then closes and seals the cuticle after washing, locking in moisture and treatment results. Using both together gives the full benefit of the system, neither product alone achieves the same result.

Key actives and what they do

• Castanha do Pará (Brazil Nut) Oil — Rich in selenium, vitamin E, and essential fatty acids. Deeply nourishes the hair fiber during cleansing, restores moisture lost during chemical processing, and adds natural shine and softness.
• Macadamia Ternifolia Seed Oil — A lightweight oil with a fatty acid profile close to the hair’s natural sebum. Conditions the hair during washing without weighing it down. Improves elasticity and reduces breakage in chemically weakened strands.
• Hydrolyzed Collagen — Fills gaps in the hair’s protein structure caused by chemical damage. Improves tensile strength, reduces breakage, and restores the hair’s natural resilience.
• Silk Amino Acids — Small-molecule proteins that penetrate the hair shaft and bind to damaged areas. Smooth the cuticle and add a silky, reflective finish.
• Wheat Amino Acids — Strengthen the hair fiber from within. Work alongside silk amino acids to rebuild the hair’s internal protein matrix and reduce split ends.
• Hydroxypropyl Guar (Guar Hydroxypropyltrimonium Chloride) — A natural conditioning agent derived from guar beans. Detangles the hair during washing, reduces friction and breakage during rinsing, and improves manageability.
• Copaiba Resin — A natural Brazilian resin with anti-inflammatory and protective properties. Helps protect the scalp and hair fiber during cleansing.
• Carnaúba Wax — Adds shine and helps protect the hair surface during washing.
• Cupuaçu Butter — A rich Amazonian butter that conditions and softens the hair during the cleansing process, preventing the dryness that can occur with repeated washing of chemically treated hair.
• Cocamidopropyl Betaine — A mild, sulfate-free surfactant derived from coconut oil. Provides gentle cleansing without stripping the hair’s natural oils or the results of chemical treatments.

What to expect

Immediate: hair feels clean, soft, and manageable after the first wash — not stripped or dry. With consistent use as part of the Carnival system: chemical treatment results last longer, color stays vibrant, and protein or keratin smoothing effects are maintained between salon visits. The sulfate-free formula is gentle enough for daily or every-other-day washing without compromising treatment longevity

Who it is for

• Hair that has undergone Brazilian protein, keratin smoothing, relaxing, bleaching, or coloring
• Anyone using the Sarah K Carnival system who needs a compatible maintenance shampoo
• Dry, damaged, or frizzy hair needing gentle, nourishing cleansing
• Anyone wanting to extend the results of salon chemical treatments at home

Who it is not for

• Curly-girl method followers — contains proteins that some curl methods avoid
• Anyone looking for a clarifying or deep-cleansing shampoo — use the Carnival & Rio Clarifying Shampoo before protein treatments instead

Keep out of reach of children. Protect from light, excessive heat, and moisture. Avoid contact with eyes. Discontinue use if irritation occurs.