He-Shi Lash + Brow Developer is an essential part of tinting. By adding the developer to your desired tint it endures the colour to lashes & brows, lasting up to 4-6 weeks. CAUTION: For Professional use only Wear Suitable Gloves If product comes into contact with eyes rinse immediately with water He-Shi Professional Products are the choice of tanning professionals across the UK, Ireland & Europe. He-Shi is the solution to all professional salon self tanning needs.