The basics Skin Illustrator Pro Brush Spa is a hand-made hard milled unscented soap. The benefits It is Vegan, Cruelty-Free and Formulated without: parabens, sulfates, phthalates. The uses Using Brush Spa, immerse the bristles into the cake & swirl to wet the fibers and clean. Thoroughly rinse the residue out of the bristles. Repeat if necessary. Gently squeeze out excess water with your fingers and re-form the tip to it’s original shape and set aside to dry. The bottom line Quick, easy way to gently clean and condition both natural or synthetic brushes.