Dry, flaky skin happens when your skin’s outer layer loses moisture faster than it can replace it. This outer layer, called the stratum corneum, is built like a brick wall: flat skin cells held together by a dense matrix of natural oils. When those oils break down or get stripped away, water escapes through the gaps, cells clump together instead of shedding smoothly, and you see the visible flaking. The causes range from everyday habits like long hot showers to hormonal shifts and underlying skin conditions.
How Your Skin Normally Sheds
Your skin is constantly renewing itself. New cells form at the base of your epidermis and migrate upward over about two weeks, flattening and hardening along the way. By the time they reach the surface, they’re dead, tightly packed cells embedded in a layer of protective lipids. In healthy skin, these cells shed invisibly. You lose millions of them every day without noticing.
When your skin is dry, this shedding process breaks down. The lipid “mortar” between cells gets disrupted, so instead of releasing one by one, dead cells stick together and peel off in visible flakes. At the same time, the gaps left behind let water evaporate from deeper skin layers, a process called transepidermal water loss. It becomes a cycle: dryness causes flaking, and the damaged barrier causes more dryness.
Common Causes You Can Control
Hot Showers and Long Baths
Hot water dissolves the natural oils that keep your skin barrier intact. Dermatologists recommend keeping showers to 5 to 10 minutes. Anything longer, especially in hot water, strips away those protective lipids and leaves your pores open for moisture to escape. Lukewarm water does the job without the damage. If your skin feels tight or itchy after a shower, the water was too hot or you stayed in too long.
Low Humidity
Indoor humidity below about 30 percent is enough to dry out your skin and nasal passages. In winter, heated indoor air often drops well below that threshold. If your skin gets significantly worse during cold months, a hygrometer (a cheap humidity monitor) can confirm whether your home’s air is the culprit. A humidifier in your bedroom can make a noticeable difference within days.
Harsh Cleansers
Healthy skin sits at a pH of roughly 4.5 to 5.5, slightly acidic. Many traditional bar soaps and foaming cleansers are far more alkaline, which disrupts this acid mantle and weakens the skin barrier. Switching to a pH-balanced cleanser (look for one around pH 5.5, or labeled “pH-balanced” or “soap-free”) can reduce dryness on its own, particularly on your face and hands where you wash most often.
Hormonal Shifts and Dry Skin
If your skin dryness seems to come and go on a schedule, hormones may be involved. During the first few days of a menstrual cycle, estrogen, progesterone, and testosterone are all low, which means less oil production and visibly drier, duller skin. Later in the cycle, progesterone and testosterone rise and stimulate your oil glands, so the dryness often improves mid-cycle before shifting toward oiliness and breakouts before your period.
Menopause brings a more permanent version of this shift. As estrogen levels drop, the skin produces less collagen, becomes thinner, and loses its ability to retain moisture effectively. This is one reason why skin that was never particularly dry can suddenly become flaky in your 40s or 50s. Moisturizers with ceramides, which mimic the natural lipids in your skin barrier, are particularly useful during this stage.
Nutritional Gaps That Show on Your Skin
Your skin barrier depends on essential fatty acids that your body can’t make on its own. In a controlled trial, women with dry, sensitive skin who took about 2.2 grams of flaxseed oil or borage oil daily for 12 weeks saw significant reductions in water loss, skin roughness, and scaling compared to a placebo group. A separate study found that 1.5 grams of evening primrose oil daily for 12 weeks improved skin moisture, elasticity, and firmness.
You don’t necessarily need supplements. Fatty fish, walnuts, flaxseeds, and chia seeds are all rich in omega-3 fatty acids. Even topical plant oils can help: in one study, applying a small amount of sunflower seed oil to the skin daily for two weeks was enough to reduce scaliness and normalize water loss through the skin. If your diet is low in healthy fats, this is one of the more straightforward fixes.
Skin Conditions That Cause Flaking
Sometimes dry, flaky skin isn’t just dry skin. Several conditions look similar on the surface but require different approaches.
Eczema causes patches of red, itchy, inflamed skin that can crack and weep. It tends to appear in the creases of elbows, behind the knees, and on the hands and face. The flaking is often accompanied by intense itching that worsens at night.
Psoriasis produces thicker, more defined plaques covered in silvery-white scales. On the scalp, lesions are typically asymmetrical and sharply bordered. About 10 to 55 percent of people with psoriasis also develop nail changes like pitting, discoloration, or thickening, which can help distinguish it from other conditions.
Pityriasis rosea often starts with a single oval, scaly patch (the “herald patch”) that appears a few days to a week before a broader rash develops on the trunk in a pattern that follows the skin’s natural tension lines. It resolves on its own within 6 to 8 weeks.
If your flaking is limited to one area, forms thick silvery scales, appears in a distinct pattern, or comes with significant redness, pain, or itching, it’s worth getting a professional look. Ordinary dry skin is diffuse and responds to moisturizer. Conditions like eczema and psoriasis typically don’t resolve with moisturizer alone.
How to Moisturize Effectively
Not all moisturizers work the same way, and understanding the three types of moisturizing ingredients helps you pick the right product for your level of dryness.
- Humectants pull water from the air and deeper skin layers toward the surface. Common ones include glycerin, hyaluronic acid, urea, and lactic acid. They hydrate, but on their own in dry environments, they can actually pull moisture out of your skin.
- Emollients fill in the gaps between skin cells to make skin feel smoother and softer. Ceramides, lanolin, and silicones fall into this category. They improve texture but don’t lock in moisture on their own.
- Occlusives form a physical seal over the skin to prevent water from escaping. Petrolatum is the most effective, followed by plant oils like coconut and olive oil, and waxes.
The most effective moisturizers combine all three. For mild dryness, a lotion with glycerin and a light emollient is usually enough. For persistent flaking, look for a thicker cream that includes an occlusive like petrolatum or a plant oil. Applying moisturizer within a few minutes of showering, while your skin is still slightly damp, traps significantly more water than applying to fully dry skin.
When Urea Makes a Difference
Urea is a naturally occurring compound in your skin that acts as both a humectant and a gentle exfoliant, depending on concentration. Products with up to 10 percent urea hydrate the skin and support barrier function, making them a good choice for everyday dryness. Concentrations between 10 and 30 percent actively exfoliate by thinning the buildup of dead cells, which is useful for thicker, scaly patches or conditions like rough, flaky skin on the heels and elbows. If your skin is flaky despite regular moisturizing, a urea-based cream is often the next step up.
Signs Your Dry Skin Needs Attention
Dry skin that cracks deeply enough can let bacteria in, leading to infection. If your skin becomes inflamed, painful, or warm to the touch, or if you develop open sores from scratching, those are signs that simple dryness has progressed into something that needs medical treatment. Persistent dryness that doesn’t respond to consistent moisturizing over two to three weeks, or flaking that’s limited to specific patches with sharp borders, also warrants a closer look to rule out eczema, psoriasis, or other conditions.