Your skin sheds nearly five billion cells every day, so some level of visible flaking is completely normal. But if you’re noticing more peeling, flaking, or shedding than usual, something has likely shifted: a change in your environment, a new product, a skin condition flaring up, or even just the natural aging process. The key is figuring out which category your shedding falls into.
How Normal Skin Shedding Works
Your skin is constantly rebuilding itself from the bottom up. New cells form in the deepest layer of your epidermis, then gradually migrate toward the surface over the course of several weeks. As they travel upward, they flatten, harden, lose their internal structures, and eventually reach the outermost layer, where they quietly fall off. Research from Imperial College London puts that turnover at roughly 200 million skin cells per hour.
In your twenties, this full cycle takes about 28 days. In your teens, it can be as fast as 14 to 20 days. By your sixties, that same cycle stretches to 60 days or longer. This slowdown is one reason older skin looks duller and drier: dead cells sit on the surface longer before shedding, which can make flaking more noticeable even though the skin is technically shedding less frequently.
Dry Skin and Weather Changes
The most common reason for a sudden increase in visible shedding is simple: your skin is dry. Cold, dry winter air strips moisture from the outer layer of skin, and indoor heating makes it worse. Hot showers, harsh soaps, and low humidity all do the same thing. When that outermost layer loses enough moisture, the cells don’t shed smoothly in tiny invisible fragments. Instead, they clump together and peel off in visible flakes.
If your shedding gets noticeably worse in winter or after long hot showers, dry skin is the likely culprit. Switching to a gentle, fragrance-free cleanser and applying a thick moisturizer right after bathing (while your skin is still slightly damp) usually makes a clear difference within a week or two.
Sunburn Peeling
If your skin started shedding after sun exposure, your body is doing exactly what it’s designed to do. UV radiation damages the DNA inside skin cells, triggering an emergency response: the body kills off the most damaged cells and sheds them. This is why sunburned skin peels in sheets rather than in fine flakes. The peeling typically continues for 7 to 10 days after the burn, and the best thing you can do is keep the skin moisturized and resist pulling at loose edges, which can tear healthy skin underneath.
Retinoids and Skincare Products
If you’ve recently started using a retinoid (tretinoin, adapalene, retinol), increased shedding is an expected side effect. Retinoids speed up the breakdown of the tiny protein links that hold dead skin cells together on your skin’s surface. Without those connections, cells detach faster and in larger, more visible pieces. This is why dermatologists sometimes call the adjustment period “retinoid dermatitis,” and it’s why your face may peel, flake, or feel tight for the first several weeks of use.
This typically settles down as your skin acclimates, usually within four to eight weeks. Using a lower concentration, applying it less frequently, or layering moisturizer underneath can help you get through the adjustment with less peeling. Chemical exfoliants like glycolic acid, salicylic acid, and benzoyl peroxide can cause similar shedding, especially if you’re using more than one active product at a time.
Skin Conditions That Cause Excess Shedding
Several chronic skin conditions make shedding more dramatic and persistent. Knowing which one you’re dealing with matters because the treatments differ significantly.
Eczema (atopic dermatitis) produces dry, itchy patches that flake and sometimes crack. The shedding tends to happen in areas where skin folds or where clothing rubs: inner elbows, behind the knees, hands, and the face. Flare-ups come and go, often triggered by stress, allergens, or irritants.
Psoriasis causes the skin to produce new cells far too quickly, leading to a buildup of thick, silvery-white scales on top of inflamed, reddened skin. Psoriasis scales look noticeably thicker and drier than the flakes from other conditions. Common locations include the scalp, elbows, knees, and lower back, though it can appear anywhere.
Seborrheic dermatitis is the condition behind most cases of dandruff. It produces oily, yellowish, or white flakes, usually on the scalp, eyebrows, sides of the nose, or behind the ears. Unlike psoriasis scales, seborrheic dermatitis flakes tend to be greasier and thinner.
Fungal infections like athlete’s foot or ringworm cause localized peeling, often with a ring-shaped border or concentrated between the toes. The affected area is usually itchy and may look slightly red or discolored.
Nutritional Deficiencies
Severe nutritional deficiencies can cause skin to peel, though this is less common in well-nourished populations. Protein malnutrition, historically called kwashiorkor, produces a distinctive pattern where darkened skin develops a shiny, varnished appearance before peeling away in flakes, sometimes described as “flaky paint” dermatitis. Deficiencies in niacin (vitamin B3), biotin (vitamin B7), zinc, and essential fatty acids can all contribute to scaly, peeling skin. If your diet has been significantly restricted, whether through an eating disorder, a very limited diet, or a medical condition affecting absorption, nutritional gaps are worth investigating.
Signs That Shedding Needs Medical Attention
Most skin shedding is harmless, but a few patterns signal something more serious. Erythroderma is a condition where redness and scaling spread across 90% or more of the body’s surface. The skin turns bright red, then develops white or yellow scales. It can be triggered by a drug reaction, an underlying skin condition spiraling out of control, or rarely, an internal malignancy. Nearly all patients experience intense itching, and more than half develop a fever. Swollen lymph nodes and an enlarged spleen or liver show up in close to half of cases. This is a medical emergency.
Outside of that extreme scenario, you should pay attention if your peeling comes with fever or chills, if it appeared suddenly without an obvious cause, if large areas of skin are blistering before peeling, if the affected skin looks infected (increasing redness, warmth, pus, or streaking), or if over-the-counter moisturizers and gentle care haven’t improved things after two to three weeks. Unexplained peeling that keeps spreading or worsening is worth a visit to a dermatologist, who can often identify the cause with a visual exam and, if needed, a skin biopsy or allergy testing.