How does THD vitamin C differ from regular vitamin C?

THD ascorbate is an oil-soluble derivative that is far more stable than L-ascorbic acid and penetrates skin well. It is gentler, but it converts to active vitamin C in skin, so brightening takes longer than with a strong L-ascorbic acid serum.

Is 0.5% bakuchiol enough to replace retinol?

Most bakuchiol studies used 1% twice daily. At 0.5% this cream is a mild introduction, good for sensitive skin, but people used to retinol may find it too weak on its own.

Can I use it with retinol or acids?

Yes. Bakuchiol and THD are generally well tolerated alongside retinoids and AHAs, unlike pure vitamin C. Introduce one new product at a time if your skin is reactive.

When should I apply it?

THD vitamin C is stable enough for morning use under sunscreen, which is when an antioxidant helps most. It also works in the evening after cleansing.