NIOXIN Night Density Rescue Serum — Overnight Hair Thickening Serum, 2.4 fl oz, Antioxidant Leave-On

Nioxin Night Density Rescue Serum is an overnight, leave-on treatment formulated to help reduce hair fall associated with scalp surface oxidation and support the appearance of thicker, fuller-looking hair.

This intensive nighttime serum harnesses a concentrated antioxidant complex called Nioxydine(24) to address oxidation on the scalp that can contribute to hair thinning. Designed to be applied before bed, the lightweight formula absorbs without rinsing so it can work while you sleep. Dermatologically tested and created by a salon brand with decades of experience in thinning-hair care, this product aims to support scalp health and hair density appearance over weeks of nightly use.

How does this serum work overnight to support hair appearance?

The formula is crafted to remain on the scalp during sleep, allowing antioxidant ingredients to target free radicals and surface oxidation that may affect hair growth cycles. By reducing oxidative stress at the scalp surface, the serum helps create a healthier environment for existing hair to appear fuller.

• Leave-on overnight application for uninterrupted activity while you sleep
• Nioxydine(24) antioxidant complex designed to neutralize free radicals
• Lightweight, non-greasy texture that absorbs into the scalp

When will I notice results and how should I use it?

Visible differences in hair density appearance are typically reported with consistent nightly use over several weeks. Apply directly to a clean, dry scalp at bedtime, massage gently to distribute, and leave on overnight. Follow the product directions for recommended frequency and quantity.

• Apply nightly to targeted thinning areas on a clean scalp
• Use the dropper or tip to place serum close to the scalp for even coverage
• Massage lightly to aid absorption; do not rinse until morning

Is the serum safe for sensitive scalps and colored hair?

The product has been dermatologically tested and formulated to be suitable for scalp application; however, individual sensitivities vary. If you have a sensitive scalp, scalp conditions, or recent chemical treatments, perform a patch test or consult a professional before regular use.

• Dermatologically tested formulation
• Suitable for use with color-treated hair when used as directed
• Patch test recommended for sensitive scalps or active scalp conditions

Who is this for: Nioxin Night Density Rescue Serum is aimed at people noticing thinning or reduced hair density who want a targeted overnight treatment. It’s appropriate for those seeking a leave-on antioxidant approach to improve the appearance of fullness, including users of other Nioxin system products or anyone wanting to complement a daytime haircare routine.

Ingredients

ALCOHOL DENAT., WATER/EAU, CAFFEINE, PANTHENOL, FRAGRANCE/ PARFUM, MENTHOL, LAURIC ACID, PEG-40 HYDROGENATED CASTOR OIL, TOCOPHERYL ACETATE, PEG-35 CASTOR OIL, POLYSORBATE 20, BIOTIN, ZINGIBER OFFICINALE (GINGER) ROOT EXTRACT, PASSIFLORA EDULIS FRUIT EXTRACT, CITRAL, LIMONENE, CITRONELLOL, GERANIOL, LINALOOL.