Ya-man Flawless Serum Hydrating 80g A serum that moisturizes the skin and supports warming with RF. Recommended for use with RF beauty devices. It came as a set when I purchased the beauty device. I am selling it because I don't use it. Contains ingredients that prevent skin irritation and smooth the skin. Prevents skin dryness with a moisture barrier. Luxuriously formulated with ingredients that promote firmness, including retinyl palmitate, which keeps the skin healthy. With a rich texture, it stays on the skin surface for a long time and keeps it moisturized.