OUAI Scalp Serum | Thicker Fuller Hair | 2 fl oz

Target the root cause of thinning hair with OUAI Scalp Serum — a lightweight, science-backed serum formulated to balance the scalp microbiome, strengthen hair at the root, and visibly improve hair fullness and thickness over time. Because healthy hair always starts at the scalp.

OUAI Scalp Serum is powered by three key actives: Red Clover Extract (rich in isoflavones that help block DHT and support hair retention), Siberian Ginseng (a traditional botanical known to stimulate circulation at the scalp and encourage growth), and a patented Hair Strengthening Complex that nourishes the follicle environment for optimal hair cycling. The formula also contains Niacinamide to calm scalp inflammation, and Zinc PCA to regulate sebum production and maintain scalp clarity. It's lightweight enough to use daily without weighing hair down or causing buildup.

Apply directly to the scalp using the dropper applicator, massage gently, and leave in — no rinsing required. Use morning or night as part of your regular hair care routine. Each 2 fl oz bottle provides a full month's supply at the recommended daily dosage.

Key Actives: Red Clover Extract, Siberian Ginseng, Niacinamide, Zinc PCA
Size: 2 fl oz / 60ml
Best For: Thinning hair, scalp health, hair density improvement
How to Use: Apply to scalp daily, leave in, no rinsing required

Frequently Asked Questions

Do I apply OUAI Scalp Serum to wet or dry hair?

It can be applied to either. Many users prefer applying to a clean, slightly damp scalp after washing for maximum absorption.

How long does one bottle of OUAI Scalp Serum last?

At the recommended daily usage, one 2 fl oz bottle lasts approximately 30 days.

Is this 100% authentic?

Yes — all Hamxi products are 100% authentic, sourced from authorized distributors.

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- No EU import duties.
- Ships within 1-2 business days.
- Ships in our fully recyclable and biodegradable signature boxes.

Regularcare. Use a slightly damp, soft and lint-free cloth for regular dust removal. Always clean in the direction of the grain.