NIOXIN Night Density Rescue Serum overnight hair thickening treatment — Nioxydine(24) antioxidant, leave-on for fuller-looking hai

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.

Based on Nioxin’s Nioxydine(24) Technology, this dermatologically tested serum targets scalp surface oxidation with a concentrated antioxidant blend designed for nightly use. The lightweight, non-rinse formula is meant to work while you sleep, supporting a calmer scalp environment that can improve the visible density of hair over time when used as directed.

How does this treatment work overnight?

The serum is applied to a dry or towel-dried scalp and left on during sleep so active antioxidants can neutralize free radicals at the scalp surface. This nightly exposure aims to reduce factors that can contribute to increased hair fall associated with surface oxidation.

• Leave-on, non-rinse formula for continuous overnight action
• Antioxidant-rich Nioxydine(24) Technology to address scalp surface oxidation
• Dermatologically tested to suit regular nightly use

When can I expect to notice changes in hair appearance?

Visible improvements in hair density have been reported in study timelines; individual results vary depending on hair condition and consistency of use. Many users observe changes in the look of fullness within a few months when the product is applied nightly as part of a regular routine.

• Designed for nightly application to build results over time
• Most study timelines reference noticeable appearance changes within 2–3 months
• Consistency and scalp-to-shaft coverage help maximize visible benefits

How do I apply the Night Density Rescue Serum correctly?

Apply directly to the scalp in sections to ensure even coverage, then massage gently and leave the serum in overnight. No rinsing is required; simply style as usual in the morning. Follow package directions for frequency and quantity specific to your hair density.

• Section hair and apply the dropper or pump to the scalp for targeted delivery
• Massage lightly to distribute the serum and promote scalp contact
• Leave on overnight; do not rinse until your next wash

Are there any compatibility or safety notes?

Formulated for nightly scalp use and dermatologically tested, it can be incorporated into most thinning-hair care routines. If you have a sensitive scalp or are using prescription scalp treatments, consult a dermatologist before combining products.

• Dermatologically tested for topical scalp use
• Avoid contact with eyes; discontinue use if irritation occurs
• Consult a healthcare professional when combining with medicated scalp therapies

Who is this for: Nioxin Night Density Rescue Serum is intended for individuals concerned about visible hair thinning and scalp surface oxidation who want a simple, leave-on nightly step. It suits people looking to add an antioxidant-focused treatment to their hair care routine to help support the appearance of fuller hair when used consistently.

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.