This is a set of MEDULLA's LIGHT Personalized Hair Mask and MEDULLA Hyper Link Serum 55ml, a leave-in treatment (*^^*) I've used the Hyper Link Serum a few times, but it wasn't enough for my hair type... The hair mask is unopened and unused, and I'm selling it as a set to someone who is looking for it☆ Please understand that this has been stored at home. Shipping will be via Rakuraku Mercari or Yuu Yuu Mercari. Returns are not accepted after the product has been shipped or after it has arrived. m(_ _)m - Brand: MEDULLA - Product Name: Hair Mask - Type: LIGHT - Features: Customizable Hair Mask - Serum Name: HYPER LINK SERUM