This set of four black rubber mixing bowls is designed for preparing facial masks, mud masks, and other DIY skin care treatments at home or in a salon setting. Each bowl is made from flexible, non-slip rubber material that provides a stable base during mixing and resists sliding on countertops. The dark color helps minimize the appearance of staining from clay or pigment-based mask ingredients, making the bowls easy to clean after each use. The soft texture of the rubber allows for gentle squeezing or pressing to aid in blending thicker formulas without damaging the bowl surface. Each bowl offers a moderate capacity suitable for mixing single-use portions of mask powders, creams, or liquid ingredients, reducing waste and allowing for fresh preparation per treatment. The set includes four identical bowls, enabling users to prepare multiple mask variations or separate ingredients during a single session. These bowls are lightweight and portable, making them practical for travel or for use in beauty salons where multiple treatment stations may be needed. The material does not absorb odors or residues from typical skin care products, and the smooth interior surface supports thorough mixing with spatulas or brushes. This product is intended for external use only, as a tool for mixing non-toxic skin care preparations. It is not a medical device nor is it intended to diagnose, treat, or prevent any skin condition. The bowls are suited for adults who regularly perform at-home facials or professional estheticians seeking affordable, reusable mixing containers. No claims are made regarding specific skin benefits from the bowls themselves, as their function is limited to preparation of mask mixtures.