BzzAgent members! Check your email for an invitation to apply now for a invite to apply to try Redken Acidic Bonding Concentrate Hair Products in exchange for a public review. Choose from Redken Acidic Bonding Concentrate Shampoo, Conditioner & Acidic Leave-In Conditioner OR Redken Acidic Moisture Concentrate, Acidic Protein Amino Concentrate & Acidic pH Sealer. Not everyone is eligible for this campaign; only those who received the email invite. Not already a BzzAgent member? Sign up here to receive invitations via email for future promotions.