First Time Buyers: Please send a copy of your Obagi training certificate to [email protected], your order will only be released once we have this on file. Obagi Men Onyx Kit Obagi-C C-Cleansing Gel – removes impurities, helps calm the skin. Professional-C Serum 10% – mild pigment suppression, hydration, stimulation of collagen. Retinol 1.0 – Hydrating, anti-ageing, boosts cellular turnover. Obagi HydraFactor Broad Spectrum SPF30 – lightweight, moisturising, defends against harmful UVA/UVB rays.