We all know our birth age, but when it comes to skincare, that number doesn’t always tell the full story. Two people at 45 can look completely different—one with smooth, firm skin, the other with deeper wrinkles and uneven tone. The difference is biological skin age, a measure of how fast your skin is really aging. Understanding this age, and whether you’re experiencing accelerated skin aging, is the key to building skincare that truly works for you. What Is Biological Skin Age? Your biological skin age reflects the cond

When we think about aging, we often imagine a natural, slow journey, like seasons changing. That’s healthy aging. But in reality, most of the lines, sagging, and spots we see in the mirror come not just from time itself but from accelerated aging. This occurs when stress, pollution, UV light, and lifestyle factors press fast-forward on the skin’s clock, overwhelming its natural renewal system. Most anti-aging creams target surface signs such as wrinkles, dryness, and uneven tone. Think of this as repainting a wall that has

When it comes to youthful, radiant skin, hydration is everything. Yet as we age, our skin’s natural ability to hold water steadily declines — often long before visible wrinkles appear. According to the SEHI (Skin Epigenetic Hydroxylation Incompetence) theory, this drop in hydration is not just about surface dryness; it reflects biological aging within your skin cells. Hydration and the SEHI Connection SEHI measures the biological “well-being” of your skin — how fast it is aging based on molecular and cellular markers

What Is Accelerated Skin Aging? Skin aging is not always a smooth and gradual process. There are certain biological acceleration points where changes occur more rapidly, and the ages of 44 and 60 are two notable examples. This phenomenon is known as accelerated skin aging, or premature aging, which refers to the early appearance of signs such as wrinkles, age spots, and sagging skin. In essence, it is when your skin looks older than your actual age. Accelerated aging results from a combination of internal (intrinsic) and exter

When you hear the word antioxidant, you probably think of vitamin C or green tea extract—powerful defenders that fight free radicals and brighten the skin. But modern skin science has taken antioxidants to an entirely new level. Recent research on SEHI (Skin Epigenetic Hydroxylation Incompetence) shows that not all antioxidants are created equal. Some can actually reactivate the skin’s ability to repair and renew itself at the genetic level, helping your skin not just look younger but age healthily again. What Is SEHI and

Skin epigenetic hydroxylation incompetence (SEHI) can be defined as a progressive decline in the skin’s ability to perform hydroxylation-dependent epigenetic modifications, primarily DNA and histone hydroxymethylation. These modifications regulate gene expression related to repair, regeneration, and antioxidant defense pathways. Therefore, SEHI involves a disruption or deficiency in the hydroxylation process within skin cells, contributing to various structural and functional impairments that accelerate skin aging. Main Char

When we talk about skin aging, most people imagine the natural process of growing older: the gradual thinning of the dermis, the appearance of fine lines, or a slower rate of cellular renewal. This “simple aging” is an unavoidable physiological process determined by time. However, what truly concerns both dermatologists and the skincare industry is something different: accelerated skin aging. Unlike natural aging, accelerated aging results from external and internal stressors that cause the skin to deteriorate faster than

Have you ever met someone in their 50s who looks like they’re in their 30s—and someone else the same age who looks much older? That’s the mystery of biological skin age versus chronological age. While your birthday counts the years you’ve lived, your skin age reflects how well your skin has actually aged on a cellular level. And here’s the fascinating truth: your skin can absolutely be younger than your birth age, but how much younger depends on when you were born and how your skin’s biology is performing today. Th

In the world of skincare, one-size-fits-all solutions no longer make sense. Your skin’s needs are unique, not only because of your chronological age but also because of how your biological skin age and level of accelerated aging evolve over time. The SEHI (Skin Epigenetic Hydroxylation Incompetence)-based skin aging self-test is transforming how we understand, track, and care for our skin. It helps you move beyond guesswork and enter a new era of true personalization. What Is SEHI and Why Does It Matter? SEHI reflects the sk