Give your lengths some well-deserved TLC with the Redken Acidic Grow Full System Shampoo 75ml, Conditioner 50ml, Serum & Spray Bundle. Supercharged with azelaic acid and a densifying complex, the four-piece, pH-balanced system works to encourage volume and reduce the appearance of breakage. Expect a fresher, healthy-feeling result. Set Contents: Redken Acidic Grow Full System Densifying Shampoo for Thin Hair, Strengthens & Thickens 300ml Redken Acidic Grow Full System Densifying Conditioner for Thin Hair, Strengthens & Thickens​ 300ml Redken Acidic Grow Full System Hair Serum for Thin Hair, Strengthens & Thickens 100ml Redken Acidic Grow Full System Instant Densifying Spray for Thin Hair, Strengthens & Thickens 200ml