Depending on the type of resin, the range of available types of colourants varies. 🤓 UV resins used in the class are not hardened (i.e., opaque) for a long time, and the surface becomes sticky and unrefined; UV resins are limited to transparent (non-invisible) colourants.~Transparent colorants can be used as UV/LED colourants for nail art or UV resin-only colouring agents 😊 Although it can be added with other materials, it is highly likely that the surface will be unrefined even though it is colored, so we recommend a dedicated colouring agent (transparent)✍🏻😊 On the other hand, 2-liquid resins are hardened regardless of the opacity of the color, so there are few restrictions on the color preparation.😀