Why you'll love it A professional lash and brow product: Stain Developer 100ml Quality lash and brow treatment or accessory For professional brow and lash services Reliable Hi Brow quality A lash and brow essential Hi Brow Stain Developer 100ml is a professional lash and brow product for quality brow and lash services and aftercare. What it does A quality professional lash and brow product for treatments, prep or aftercare, for defined, well-groomed, cared-for lashes and brows. How to use it Use as directed within your lash and brow service. Patch test any tint/lamination products 48 hours before. Who it's for This one's for lash and brow professionals and their clients. We've spent years helping clients in Codsall look and feel their best, and quality products make for better lash and brow results. Explore more Discover more lash and brow and Hi Brow favourites across our shop by brand pages, or browse the rest of our hair and beauty products to round out your kit. Free UK delivery on all orders. For external use only. Avoid contact with the eyes. If you have sensitive skin or a known allergy, patch test before use, and discontinue if irritation occurs.