Ergocalciferol

Ergocalciferol, also known as vitamin D2, is one of two main forms of vitamin D found in nature. It is typically derived from plant sources or fungi and is commonly used in dietary supplements and fortified foods. In skincare, it functions as a skin conditioning agent.Vitamin D2 is a precursor that the body can metabolise into its active hormonal form. Within the skin itself, vitamin D plays a regulatory role in cellular health and inflammatory responses, which is why it has become a focus of skincare research in recent years.

When applied topically or ingested, ergocalciferol is converted by the body into calcitriol, the active hormonal form of vitamin D. This active form binds to vitamin D receptors present in skin cells, influencing gene expression and cellular behaviour.Research suggests that this activation may help regulate skin cell senescence (ageing) and reduce inflammatory signalling pathways that are triggered by UV exposure. However, the extent to which topical application delivers these benefits compared to systemic vitamin D status remains an area of ongoing study.

Ergocalciferol is typically incorporated into moisturisers, serums, and conditioning products at low concentrations. It works well as part of a broader skincare routine and can be used daily. There is no need to cycle this ingredient, though results depend on consistent use over time and should be considered alongside overall vitamin D status from diet and sunlight exposure.

Ergocalciferol is generally well-tolerated in topical skincare products. No significant irritation or safety concerns are documented at typical cosmetic concentrations.