1,3-Dihydroxyacetone dimer is primarily used as an ingredient in sunless tanning products. It is a waterproof skin dye used to darken light or unpigmented areas of skin affected by vitiligo, scars or other causes.

This Thermo Scientific brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific.