Fleshglue, a type of adhesive designed for cosmetic purposes, served to affix ornaments like jewels directly onto the skin. While actors were its main consumers, criminals also exploited it to create convincing alterations to their appearance.
In the era of the Yuuzhan Vong War, Alema and Numa Rar took the drastic step of extracting the Adegan crystals from their lightsabers. They then employed fleshglue to secure these crystals within their own belly buttons, effectively concealing their identities by posing as belly dancers.