Nexxus Curl Define Leave-In Conditioner for Curly & Coily Hair — 8 oz, ProteinFusion for Moisture & Frizz Control

Nexxus Curl Define Leave-In Conditioner is a lightweight cream that hydrates, tames frizz, and enhances curl definition using the brand's ProteinFusion blend of silk protein and marula oil.

This leave-in conditioner is designed specifically for curly and coily hair textures, delivering instant moisture without weighing curls down. Formulated as part of the Nexxus Curl Define system, the ProteinFusion technology aims to reinforce the hair’s internal structure while smoothing the cuticle so curls appear softer, more defined, and easier to style. Use it after cleansing and conditioning—or whenever your curls need a hydration boost—to help maintain shape and reduce flyaways between washes.

How does this leave-in conditioner improve curl definition?

The formula combines silk protein with marula oil to help strengthen individual strands and enhance natural pattern formation. By coating and smoothing the hair surface, the cream reduces fuzz and encourages each curl to clump more uniformly for clearer shape and bounce.

• ProteinFusion blend supports elasticity and resilience
• Lightweight cream minimizes heaviness on fine to medium curls
• Controls frizz while promoting curl separation

Will it add moisture without making my hair greasy?

Yes — the Nexxus leave-in delivers hydration using a balanced mix of emollients and proteins that absorb without leaving an oily residue. The result is supple, touchable curls rather than weighed-down strands.

• Marula oil supplies fast-absorbing nourishment
• Silk protein helps retain moisture within the fiber
• Non-greasy finish keeps volume and natural movement

How do I use this product within a curl routine?

Apply to clean, damp hair after shampooing and conditioning, or use between wash days to refresh shape and manageability. Work it through from mid-lengths to ends, then style as usual—air-dry, diffuse, or finger-coil for added definition.

• Use after Nexxus Curl Define Sulfate-Free Shampoo and Moisturizing Conditioner
• Apply sparingly to avoid buildup; concentrate on drier areas
• Pair with the Curl Define Pre-Wash mask for deeper restoration

Is this suitable for all curl types and porosities?

The formula was developed with curly and coily hair in mind and works across a range of curl patterns and porosities. Its protein-forward approach helps restore strength for high-porosity hair while the hydrating oils smooth lower-porosity strands—adjust usage amount to match your hair’s needs.

• Effective on wavy (2) to tight coil (4) curl patterns
• Use less on fine, low-porosity hair; use more on dry, porous hair
• Combines well with the rest of the Curl Define system for targeted results

Who is this for: Nexxus Curl Define Leave-In Conditioner is ideal for anyone with curly or coily hair looking to boost moisture, reduce frizz, and strengthen curls without excess weight. It's especially helpful for people who follow multi-step curl regimens and want a salon-inspired, scientifically informed leave-in that plays well with shampoos, conditioners, and treatments from the same Curl Define range.

Ingredients

INGREDIENTS/INGRÉDIENTS: WATER (EAU), CETEARYL ALCOHOL, DIMETHICONE, STEARAMIDOPROPYL DIMETHYLAMINE, SCLEROCARYA BIRREA SEED OIL, HYDROLYZED SILK, RICINUS COMMUNIS (CASTOR) SEED OIL, BUTYROSPERMUM PARKII (SHEA) BUTTER, HYDROLYZED KERATIN, HYDROLYZED WHEAT PROTEIN, GLYCERIN, BEHENTRIMONIUM CHLORIDE, FRAGRANCE (PARFUM), COCOS NUCIFERA (COCONUT) OIL, PHENOXYETHANOL, DIPROPYLENE GLYCOL, LACTIC ACID, CAPRYLYL GLYCOL, PETROLATUM, SODIUM CHLORIDE, AMODIMETHICONE, VP/DIMETHYLAMINOETHYLMETHACRYLATE COPOLYMER, DISODIUM EDTA, CETRIMONIUM CHLORIDE, PEG-7 PROPYLHEPTYL ETHER, BENZYL ALCOHOL, BENZYL SALICYLATE, COUMARIN, EUGENOL, GERANIOL, HEXYL CINNAMAL, LIMONENE, LINALOOL.