Redken Acidic Protein Amino Concentrate - 250ml This formula contains 12% cationic + amino acids help to improve strength & provide protein repair. Helps seal the cuticle, improve conditioning and add shine. Visibly reverses surface damage in a single treatment when using the full acidic concentrates regimen Strength repair that lasts up to 10 washes Use Assess your client's need for protein and/or moisture in hair. Acidic Moisture = for dry hair needing moisture. Acidic Protein = for damaged hair needing strength.​ After shampooing, determine if you are using Acidic Protein as a stand alone or if you will be mixing with Acidic Moisture. If as a stand alone, apply up to 15ml (1 dose = 5ml) of Acidic Protein Amino Concentrate to towel dried hair. If needed, mix together with Acidic Moisture Concentrate (total mixture should not exceed 15ml) and apply. Leave on 5 minutes. Do not rinse. Follow with Acidic pH Sealer. In case of contact with eyes, rinse them immediately.