Redken Acidic Grow Full System Scalp & Hair Serum is a lightweight leave-in serum specially developed to care for both the scalp and the hair. Its fast-absorbing formula helps support a healthy-feeling scalp while leaving hair feeling stronger without any greasy or heavy residue.

Powered by pH-balanced technology with azelaic acid and a strength complex with caffeine and prebiotics, the serum helps hair appear fuller and can visibly reduce breakage, with up to 2x less hair breakage*. When used as part of the complete Acidic Grow Full System routine, you may experience up to +5,000 fewer broken hairs from brushing**.

Key features

• Leave-in serum for scalp and hair*

• Lightweight, fast-absorbing formula*

• Supports a balanced, healthy-feeling scalp*

• With azelaic acid and a strength complex with caffeine and prebiotics*

• Helps visibly reduce hair breakage*

• Makes hair look fuller and thicker*

• Suitable for daily use and all hair types*

• Warm citrus fragrance with Italian lemon and neroli*

*Instrumental test after using shampoo, conditioner, serum, and spray.
**Instrumental and consumer test with 66 participants after using shampoo, conditioner, serum, and spray.

Directions for use
Apply the serum to a clean, dry or damp scalp.
Gently massage until fully absorbed.
Do not rinse.
Use together with the shampoo, conditioner, and spray for optimal results.