The skin is the largest organ of the body and is made up of three layers the Epidermis, Dermis and Subcutaneous layer. When concerning topical brow treatments such as waxing, tinting, lamination and hybrid procedures basic knowledge of the epidermis and specifically the outermost layer the stratum Corneum is essential, however within the epidermis there are five layers that make up its contents.
The Stratum Corneum being the outermost layer of the epidermis made up of 10-30 layers of corneocytes (dead skin cells). This layer is continually shedding and can take 29-30 days to complete a full cell turnover, however as we age its important to note that this process slows down and takes longer to shed taking 45-50 days. Keeping this in mind when treating the brow area we can draw the conclusion that as a result of this outer layer shedding, any dye or tint that attaches itself to these cells will shed/fade in the process.