Sigma Beauty Skincare Brush Set Sigma Beauty Skincare Brush Set Sigma Beauty's Skincare Brush Set is a beautiful, sleek collection of six brushes for applying skincare products. Contents S01 Clay/Mud Mask™ Brush S02 Spatula™ Brush S05 Moisturiser™ Brush S10 Serum™ Brush S15 Gel Mask™ Brush 20 Eye Cream™ Brush Take you skincare routine to the next level with these luxurious skincare brushes. These super-soft brushes allow you to apply your skincare products with ease and help avoid product waste. Cruelty-free.