Silk is perfectly compatible with the skin, so it minimizes irritation and allergies. Perky Sensitive Silk is the first hypoallergenic deodorant containing silk fibers, which respects your skin and protects it by keeping it soft and hydrated. Silk is perfectly compatible with the skin, so it minimizes irritation and allergies. Perky Sensitive Silk is the first hypoallergenic deodorant containing silk fibers, which respects your skin and offers effective protection without irritation, keeping it soft and hydrated!