Biolage Hydra Source Scalp & Hair Serum — 3 fl oz lightweight hydrating serum with aloe vera & hyaluronic acid

Biolage Hydra Source Scalp & Hair Serum is an ultra-lightweight, water-based serum that instantly hydrates dry scalp and hair using micro-filtered aloe vera and fermented hyaluronic acid.

This lightweight, non-greasy formula is designed to replenish moisture at the scalp while smoothing and softening strands from root to tip. Micro-dosed hydrating actives absorb quickly, delivering long-lasting hydration without buildup, and the vegan, paraben- and silicone-free formulation is gentle enough for color-treated and sensitive scalps.

How does this serum hydrate without weighing hair down?

The serum uses a water-based vehicle and low-dose concentrated actives so it spreads easily and sinks into the scalp and hair shaft without leaving residue. Its ultra-light texture means it supports natural movement and shine rather than coating hair with heavy oils.

• Water-based, ultra-light formula for fast absorption
• Micro-dosed aloe vera and fermented hyaluronic acid for targeted moisture
• Non-greasy finish preserves style and volume
• Suitable for fine to medium hair types seeking hydration

What results can I expect and how long do they last?

After application, the serum provides immediate feel-good hydration to the scalp and softer, more supple strands. The formula is designed for lasting moisture; in product testing it delivered extended hydration, helping hair feel smoother and look shinier between washes.

• Immediate scalp comfort and reduced dryness sensation
• Softer, more manageable hair with improved natural movement
• Hydration that supports look and feel between treatments
• Works well as a leave-in maintenance step in any routine

How do I use the serum in my routine for best effect?

Apply to a clean, towel-dried scalp and hair for direct hydration where it’s needed most; a little goes a long way. Gently massage into the scalp and distribute through lengths as needed, then style as usual — no rinsing required for leave-in benefit.

• Use after cleansing on damp hair for optimal absorption
• Dispense small amounts and target areas of dryness or frizz
• Massage into scalp to support the moisture barrier
• Can be used between washes to refresh hydration

Who is this for: Biolage Hydra Source Scalp & Hair Serum is ideal for anyone experiencing dry scalp or thirsty hair who wants a lightweight, leave-in solution. It’s especially suited to people with color-treated or sensitized scalps seeking plant-powered hydration without silicones or parabens. If you want a professional-level moisture treatment that fits into a daily styling routine, this serum delivers focused hydration with a clean, vegan formulation.