Retinaldehyde (Retinal)

The strongest retinoid available without a prescription, retinaldehyde is a vitamin A-derivative that is ideal for those that are very accustomed to retinoids. Like its retinol and retinyl cousins, retinaldehyde promotes faster skin cell turnover, encourages collagen production, helps unclog pores, and improves the look of skin tone and fine lines and wrinkles.