Autumn is officially here. Those crisp, slightly misty mornings when treetops turn golden yellow and you just want to slip into your softest sweater indoors. As the crisp autumn wind blows outside, that first morning cup of coffee becomes more than just a wake-up call for many—it turns into a cozy and peaceful ritual of its own.

When it comes to skincare star ingredients, Vitamin A derivatives—known as retinoids—reign supreme. They help speed up cell turnover, smooth fine lines, even out skin tone, and improve overall texture. But when examining product labels, a common question arises: why does one product say retinol and another retinal? Is it just a typo, or is there a real difference?

Every now and then, trends emerge in the beauty world that capture attention not just because of pretty packaging, but due to a deep scientific background. Lately, TikTok, K-Beauty (Korean beauty), and dermatologists' offices have been filled with a new combination of letters: PDRN. PDRN stands for the scientific name polydeoxyribonucleotide. Put simply and clearly, these are specially purified DNA fragments usually extracted from the cellular structure of salmonids.