This facial cleansing brush uses soft, ultra-fine synthetic bristles to create rich, dense foam. It's gentle on the skin and effectively removes dirt. The brush feels wonderful against the skin, with a combination of soft, bouncy texture and firm resilience. Rub soap onto the brush and swirl it in your palm to create a rich, dense foam. Then, gently glide the foam over your skin. After use, rinse thoroughly and hang to dry. I've used it several times, but it's been stored for about 10 years. There's no discoloration, the bristles still have their bounce, and I don't feel any deterioration at all. Approximate dimensions: 5 x 7 x 4 cm (2 x 2.8 x 1.6 inches)