促脂解素（英语：Lipotropin，简写为LPH）是一种来源于阿黑皮素原（POMC）的激素。LPH分为β-LPH和γ-LPH。β-LPH为POMC的C端片段，含90个氨基酸残基，在体内可作用于黑色素细胞使之产生黑色素，也可促进脂分解。γ-LPH则为β-LPH的N端片段，人类的γ-LPH含56个氨基酸残基。

Lipotropin is a hormone produced by the cleavage of pro-opiomelanocortin (POMC). The anterior pituitary gland produces the pro-hormone POMC, which is then cleaved again to form adrenocorticotropin (ACTH) and β-lipotropin (β-LPH).