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OUAI Scalp Serum - Balancing Hair Serum (2 Fl Oz)

4.4
★ ★ ★ ★ ★
★ ★ ★ ★ ★
(7656454 reviews)
  • Regular price $54.00
  • Amazon's Choice
OUAI Scalp Serum is a lightweight, leave-in treatment designed to hydrate and balance the scalp while supporting fuller, healthier-looking hair. Enriched with hyaluronic acid, peptides, red clover extract, and botanical adaptogens, this daily serum helps maintain scalp comfort and moisture. Its 2-ounce bottle suits all hair types and textures.
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Expert-Backed Review Summary

OUAI Scalp Serum takes a skincare-inspired approach to hair care by focusing on scalp hydration and overall scalp condition. Its formula features hyaluronic acid, peptides, red clover extract, and botanical adaptogens to support a comfortable, moisturized scalp. Hyaluronic acid helps attract and retain moisture, while the peptide ingredient acetyl tetrapeptide-3 is included to support the appearance of fuller, healthier hair. Arctic root, Siberian ginseng, and chaga mushroom extracts complement the formula's scalp-conditioning benefits. Red clover extract is intended to help reduce discomfort associated with styling, making this serum particularly appealing to individuals experiencing dryness or tightness.

The lightweight, leave-in formula can be applied directly to wet or dry scalps without rinsing. Its convenient dropper allows targeted application along the hairline, part, and other areas requiring attention. OUAI recommends daily use for consistent results, and the serum is suitable for all hair types, including oily and color-treated hair. Its Cape Town fragrance combines refreshing spearmint, ginger, basil, and green fig notes. The formula is vegan, cruelty-free, and free from parabens, phthalates, and sulfates. However, fragrance-sensitive users may prefer an unscented alternative, and this cosmetic serum should not be considered a treatment for medical hair loss. Overall, OUAI Scalp Serum offers an easy addition to routines focused on hydration and fuller-looking hair.

Key Features

  • Hyaluronic Acid Hydration – Helps maintain scalp moisture and supports a healthier-feeling scalp barrier.

  • Peptide-Enriched Formula – Contains acetyl tetrapeptide-3 to support the appearance of fuller, thicker, healthier-looking hair.

  • Red Clover & Botanical Adaptogens – Features red clover, Arctic root, Siberian ginseng, and chaga mushroom extracts for scalp-conditioning support.

  • Lightweight Leave-In Treatment – Absorbs into the scalp without requiring rinsing and can be applied to wet or dry hair.

  • Vegan & Cruelty-Free Formula – Suitable for all hair types and formulated without parabens, phthalates, or SLS/SLES sulfates.

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