17 Oct 2022 --- A Slovenia-based study has unveiled the “promising potential” of nanoformulations containing retinoids for topical delivery while underscoring a lack of large-scale research in the area. The use of nanotechnology in anti-aging cosmetics is the fastest-growing segment in the skin care industry, the researchers state.The most commonly used retinoids, such as retinol (vitamin A), retinaldehyde and retinyl palmitate, are contained in cosmeceuticals regulated as cosmetics. Since clinical efficacy studies are not required for marketing cosmetic formulations, the researchers state that there are concerns about the efficacy of these retinoids.