BACKSCRATCHERS Kikr Activator - 2 oz Go to amazon.com Related posts The 10 best backscratchers nail products 2022 DescriptionBACKSCRATCHERS Kikr is the activator that aids in the hardening process. When used with Stikr, it creates a non-porous surface and seals in natural moisture to keep nails healthy. 2 oz.