NIOXIN Hair Fall Defense Leave-In Scalp Treatment, 2.3 fl oz — Daily Strengthening Serum with Niacinamide & Caffeine

Nioxin Hair Fall Defense Intensive Daily Leave-In is a lightweight scalp treatment formulated with niacinamide, caffeine, lauric acid and SANDALORE™ to help strengthen hair and improve hair anchorage for fuller-looking hair.

Designed for daily, leave-on use, this targeted serum from Nioxin Pro Clinical supports thinning hair by nourishing the scalp and helping hair resist breakage. The formula combines known actives—niacinamide for scalp conditioning, caffeine for energizing follicles, lauric acid for hair emollience, and SANDALORE™ as a novel fragrance-derived stimulator—to help create a healthier environment for hair. In clinical testing with 120 participants, users saw improved hair anchorage with average visible results in about eight weeks while many noticed thicker hair immediately after use.

How will this treatment fit into my daily routine?

Apply the leave-in serum directly to the scalp once daily on clean, towel-dried hair. Its lightweight texture absorbs quickly so it won’t weigh hair down and doesn’t require rinsing, making it easy to add before styling.

• Dispense a few drops and part hair to apply directly to thinning areas.
• Massage gently to distribute across the scalp for even coverage.
• Style as usual—no rinse needed, suitable under styling products.

What ingredients are in the formula and what do they do?

The serum blends several actives chosen to support scalp health and hair resilience without harsh additives. Niacinamide helps improve scalp condition, caffeine is included to invigorate the scalp, lauric acid strengthens hair fiber, and SANDALORE™ is used as a novel component to support follicle stimulation in this formulation.

• Niacinamide: conditions scalp to promote a balanced environment.
• Caffeine: energizes the scalp where hair density is a concern.
• Lauric acid: helps reduce breakage by improving hair surface health.
• SANDALORE™: a first-in-product ingredient for follicle-targeted stimulation.

How quickly will I notice results and what kind of changes can I expect?

Individual responses vary, but in a controlled study with 120 panelists the product showed improved hair anchorage and many users reported thicker-looking hair from the first use. Average visible improvements in anchorage were observed after about eight weeks with regular daily application.

• Immediate: hair may appear thicker and feel stronger after first use.
• Short-term (weeks): reduced appearance of hair shedding and fewer loose hairs in the brush.
• Clinical timeframe: average anchorage improvements measured at eight weeks in study participants.

Is this safe for colored or chemically treated hair and does it contain harsh additives?

Nioxin Hair Fall Defense is formulated without parabens, sulfates, or colorants and is intended to be compatible with color-treated and chemically processed hair. As with any topical product, perform a patch test if you have a sensitive scalp or known ingredient sensitivities.

• Free from parabens, sulfates, and added colorants.
• Leave-on format suitable for daily use with most styling routines.
• Recommended: consult a stylist or test on a small area if you have sensitivities.

Who is this for: Nioxin Hair Fall Defense Intensive Daily Leave-In is aimed at people noticing thinning, increased hair breakage, or diminished hair anchorage who want a non-rinse, daily scalp treatment. It suits those seeking a lightweight, fragrance-forward serum that layers under styling products, and anyone wanting to incorporate clinically tested actives into a routine to support fuller-looking hair.

Ingredients

Alcohol Denat., Aqua/Water/Eau, Niacinamide, Caffeine, Sandalore, Parfum/Fragrance, Lauric Acid, PEG-40 Hydrogenated Castor Oil, PEG-35 Castor Oil, Alpha-Isomethyl Ionone, Hexyl Cinnamal, Limonene, Alcohol, Linalool, Tocopherol, Citric Acid.