Leptin (93-105), human, is the amino acids 93 to 105 fragment of human leptin. Leptin is a 167-residue peptide hormone mainly produced by adipocytes and acts in the central nervous system to primarily coordinate the metabolic adaptations to fasting.

SPACE peptide is a skin penetrating peptide that facilitates the transfer of molecules through the skin.

Britannilactone (Desacetylinulicin) is a sesquiterpene from Inula britannica with anti-inflammatory and anti-tumor activity.Britannilactone has been associated with this antimelanotic activity and can be used in studies of skin whitening.