Redken Acidic Grow Scalp & Hair Serum 1.5 fl oz — Lightweight pH-Balancing Leave-In with Azelaic Acid for Fuller-Looking Hair

Redken Acidic Grow Full System Scalp & Hair Serum is a lightweight, leave-in serum that rebalances scalp pH, hydrates, and helps create the appearance of denser, fuller hair.

This salon-grade scalp and hair serum is formulated to be gentle yet effective: a pH-balanced, leave-in treatment designed to restore hydration to the scalp while supporting the look of thicker, fuller hair. The formula contains a 5% Strength Complex including azelaic acid, combined with moisturizing ingredients to help soothe and rebalance the scalp environment without weighing hair down. Use it as part of a targeted routine to refresh the scalp between washes or as a daily lightweight treatment.

How does this serum rebalance my scalp?

The serum is pH-balanced to help restore a comfortable scalp environment while delivering moisture. It absorbs quickly and leaves no heavy residue, making it suitable for frequent use.

• pH-balanced formula helps maintain the scalp’s natural acidity level
• Lightweight leave-in base allows fast absorption
• Hydrating ingredients lock in moisture without greasiness
• Designed for daily or inter-wash application

What active ingredients are included and what do they do?

The serum features a 5% Strength Complex that includes azelaic acid, known in cosmetic formulations for supporting a clearer-feeling scalp environment. Other supporting components provide hydration and condition hair strands for improved manageability.

• Azelaic acid included as part of the 5% Strength Complex
• Moisturizing agents to reduce dryness and flakiness
• Non-greasy carriers that spread evenly across the scalp
• Compatibility with color-treated hair due to gentle formulation

How should I apply the Redken Acidic Grow Serum for best results?

Apply the serum to a clean, towel-dried or dry scalp and leave it in—no rinsing required. Dispense a few drops directly onto targeted areas or section hair and massage lightly to distribute the product along the scalp.

• Use 1–2 pumps/drops for targeted areas; adjust for full scalp coverage
• Massage gently to promote even distribution and absorption
• Can be used daily or between washes depending on scalp needs
• Works with styling products; follow with usual styling routine

Will this serum weigh my hair down or affect styling?

The formula is deliberately lightweight to avoid buildup and heaviness. It supports smoother styling and improves hair manageability while remaining compatible with styling products and routines.

• Non-heavy finish preserves natural volume and movement
• Leaves hair touchable and manageable for styling
• Suitable for fine to medium hair types seeking fuller appearance
• Pairs with leave-in or styling products without pilling

Who is this for: Redken Acidic Grow Full System Scalp & Hair Serum suits anyone looking to restore balance and hydration to the scalp while seeking the appearance of fuller, thicker hair. It’s appropriate for those with dryness, occasional flakiness, or people who want a lightweight, leave-in scalp treatment that works with color-treated and styled hair. Ideal for users who prefer salon-formulated products and want a simple add-on to their cleansing and styling regimen.