Developing time ? Instant but will develop quickly in a short space of time. Shade gets darker per hour. Can shower after 4 hoursFast developing mousse solution with natural extracts for the ultimate skin solution, for all skin types. With a silky, luxury feel, the smart hydration system develops immediately upon skin contact whilst giving a visible brown colour to easily blend and give a gorgeous tint. This product will get darker per hour, reaching a darker shade after 4 hours. This is formulated for the face and body. For best results, apply with the a mitt.