OUAI Thick Hair Shampoo & Conditioner Set — Sulfate-Free Hydrating Duo with Keratin & Shea Butter (10 fl oz)

OUAI Thick Hair Shampoo and Conditioner Set is a sulfate-free, moisturizing duo formulated with keratin, shea butter, marshmallow root and avocado oil to hydrate, strengthen and smooth thick hair.

If your hair is dense, coarse or naturally voluminous, it needs products that deliver deep hydration without adding excess weight. This OUAI pair was created to target thick strands—replenishing moisture, improving manageability and reducing frizz—while remaining color-safe and free from sulfates, parabens, phthalates and gluten. The scent-forward, cruelty-free formula aims to leave hair softer and more resilient whether you air-dry or style with heat.

How does this set help thick hair feel softer and more manageable?

The conditioning system focuses on restoring hydration to the hair shaft and smoothing rough cuticles so thick strands detangle easier and respond better to styling. Keratin and shea butter work together to plump and soften, while marshmallow root enhances slip for easier comb-throughs. Over time, improved moisture balance reduces stiffness and tangles.

• Keratin helps reinforce strand structure for reduced breakage.
• Shea butter supplies rich emollients to soften dense hair.
• Marshmallow root increases slip for easier detangling.
• Avocado oil adds lightweight nourishment without weighing hair down.

Will this shampoo and conditioner combat frizz without heavy buildup?

The formulation targets cuticle smoothing to lessen frizz while avoiding heavy silicones that can create residue. Because it’s sulfate-free, the shampoo cleanses more gently, preserving moisture and color. The conditioner seals in hydration to control flyaways while maintaining bounce and movement.

• Sulfate-free cleansing reduces over-drying that causes frizz.
• Moisturizing agents smooth cuticles for a sleeker appearance.
• Lightweight oils prevent greasy buildup on thick strands.
• Color-safe ingredients protect dyed hair from premature fading.

What key ingredients are responsible for strengthening and shine?

This set combines protein, fats and botanical extracts to support strength and surface shine. Keratin supplies structural protein to fortify weakened areas, while avocado oil and shea butter replenish lipids. Marshmallow root contributes slip and softness, helping hair lie flatter and reflect light more evenly.

• Keratin — reinforces and helps reduce breakage.
• Shea butter — delivers rich moisture for softness and sheen.
• Avocado oil — lightweight nourishment that supports elasticity.
• Marshmallow root — improves combability and surface smoothness.

How should I use the shampoo and conditioner for best results?

Apply the shampoo to wet hair, lather gently and rinse thoroughly to remove buildup without stripping natural oils. Follow with conditioner, concentrating on mid-lengths and ends; leave in for one to three minutes for deeper hydration before rinsing. For extra frizz control, apply a leave-in or styling product while hair is damp.

• Use on wet hair; shampoo, rinse, then apply conditioner.
• Focus conditioner on mid-lengths and ends, leave briefly for absorption.
• Rinse with cool water to help seal the cuticle and boost shine.
• Pair with a lightweight leave-in for enhanced frizz control.

Who this set is for: This OUAI Thick Hair Shampoo and Conditioner Set is designed for people with naturally thick, coarse or highly textured hair who want richer moisture, smoother styling and strengthened strands without harsh sulfates or unnecessary additives. It suits color-treated hair and anyone seeking a salon-feel routine that enhances manageability and reduces frizz while keeping a luxury scent and cruelty-free formulation.

Ingredients

Please refer to the product labels for full list of ingredients.