Bumble and bumble Hairdresser’s Invisible Oil Ultra Rich Deep Mask, 200 ml, Hair Masks for Women, The Bumble and bumble Hairdresser’s Invisible Oil hair mask is an essential step in your hair care ritual. Give it a moment to regenerate and it will repay you with vitality and beauty. Characteristics: moisturises intensely strengthens the hair fibre regenerates the hair along its entire length gives hair a brilliant shine restores hair structure How to use: Leave to act as instructed on the packaging, then rinse thoroughly.