Redken Acidic Bonding Curls Sulfate-Free Shampoo for Curly Hair — Hydrating, Bond-Building (Avocado & Shea)

Redken Acidic Bonding Curls Sulfate-Free Shampoo is a silicone-free, bond-building cleanser formulated to gently remove buildup while restoring strength, definition and hydration to damaged curly and coily hair.

If your curls feel weakened by chemical services, heat, or daily styling, this shampoo targets the internal structure of the strand while keeping curl pattern bounce. The formula pairs Citric Acid, Glycine and Urea in Redken’s Curl-Bond Technology to rebuild bonds, plus nourishing oils and butters to replenish moisture without silicones or sulfates. Use it as the first step in the Acidic Bonding Curls system — together with the conditioner and leave-in — for visibly more defined, resilient curls.

How does this shampoo rebuild curl strength without weighing hair down?

Redken’s Curl-Bond Technology works on a molecular level to help reinforce weakened points along the strand while a lightweight cleansing base clears residue. The result is improved elasticity and structure without the heavy feel that silicones can cause.

• Citric Acid, Glycine and Urea help rebuild internal bonds in keratin fibers.
• Sulfate-free surfactants cleanse gently, preserving natural oils and curl spring.
• Silicone-free formula keeps curls bouncy and responsive to styling.

Will it hydrate my curls and reduce frizz?

Yes — the shampoo is enriched with hydrating ingredients that smooth the cuticle and support longer-lasting moisture when used with the matching conditioner and leave-in. Customers reported reduced frizz and improved manageability when following the system.

• Avocado oil and shea butter deliver emollient hydration to dry areas of the curl.
• Coconut-derived conditioning agents help smooth cuticles for less frizz.
• Designed to maintain moisture balance up to several days when paired with the full routine.

Is this safe for color-treated or chemically processed curls?

The formulation is silicone- and sulfate-free and noted as suitable for color-treated hair, making it a safer choice for chemically processed curls that need rebuilding and gentle care. It supports curl restoration without stripping color.

• Vegan shampoo base without sulfates reduces aggressive color fade from harsh detergents.
• Bond-building actives help repair damage from relaxers, perms or bleaching.
• Works with the conditioner and leave-in treatment for gentler, more resilient styling.

How will my styling routine change after using this product?

You'll likely find detangling easier and that your curls respond better to leave-in products and creams because the strands are stronger and more hydrated. The shampoo sets the stage for longer-lasting definition and less frequent re-styling.

• Smoother detangling — users report easier comb-through and less breakage.
• Improved curl definition helps reduce the need for heavy styling products.
• Works in sequence with conditioner and leave-in to extend curl freshness up to days.

Who is this for: Redken Acidic Bonding Curls Sulfate-Free Shampoo is formulated for curly and coily hair types seeking repair, hydration and definition — especially curl patterns 3A through 4C that have been chemically treated, heat-damaged or otherwise weakened. It’s a good pick if you want a silicone-free, color-safe cleansing step that supports a bond-rebuilding regimen and improves manageability when paired with the matching conditioner and leave-in treatments.

• How to use: Apply to wet hair, lather, massage into scalp and lengths, then rinse. Follow with the Acidic Bonding Curls Conditioner and Leave-In Treatment for best results.
• Key ingredients: Citric Acid, Glycine, Urea, Avocado Oil, Shea Butter, Vitamin B5.
• Suitable for: 3A–4C curls, color-treated and processed hair seeking repair and definition.

Ingredients

1218391RK44 - INGREDIENTS: AQUA / WATER / EAU • SODIUM COCOYL ISETHIONATE • DECYL GLUCOSIDE • COCAMIDOPROPYL BETAINE • SORBITOL • CITRIC ACID • HYDROXYETHYL UREA • POTASSIUM HYDROXIDE • POTASSIUM COCOYL GLYCINATE • PPG-5-CETETH-20 • PANTHENOL • SODIUM BENZOATE • HYDROXYPROPYL GUAR HYDROXYPROPYLTRIMONIUM CHLORIDE • SODIUM CHLORIDE • PEG-55 PROPYLENE GLYCOL OLEATE • PROPYLENE GLYCOL • PARFUM / FRAGRANCE • CAPRYLYL GLYCOL • ACRYLATES/C10-30 ALKYL ACRYLATE CROSSPOLYMER • PEG-150 DISTEARATE • POLYQUATERNIUM-10 • POTASSIUM COCOATE • COCO-CAPRYLATE/CAPRATE • SALICYLIC ACID • GLYCOL DISTEARATE • BUTYROSPERMUM PARKII BUTTER / SHEA BUTTER • PERSEA GRATISSIMA OIL / AVOCADO OIL • LIMONENE • GLYCINE • COCO-BETAINE • LINALOOL • TOCOPHEROL • HELIANTHUS ANNUUS SEED OIL / SUNFLOWER SEED OIL • ROSMARINUS OFFICINALIS LEAF EXTRACT / ROSEMARY LEAF EXTRACT (F.I.L. T70038194/2).