What is meant by “dead skin”?
Dead skin refers to the cells of the stratum corneum (corneocytes) that have detached from the deeper layers of the epidermis and are about to fall off. When this shedding occurs regularly and is invisible, it’s called normal physiological desquamation. When it becomes visible —as fine whitish flakes, skin that “feels rough” to the touch, a dull complexion, or makeup that doesn’t stay on—it means there’s a buildup. This buildup can be seasonal, caused by an unsuitable skincare routine, or simply linked to the slowing of cell turnover that comes with age.
Why do we all have it?
Epidermal renewal is a continuous and essential process:
- Cells are produced in the basal layer and migrate to the surface in about 28 days in young adults;
- This cycle slows down with age (up to 40–50 days after age 40);
- This slowing down explains why the complexion gradually loses its radiance;
- On healthy skin, corneocytes shed without being noticeable;
- In certain areas (heels, elbows, knees), the natural thickness of the stratum corneum leads to greater buildup;
- Sun exposure, dryness, friction, and inappropriate skincare products amplify visible buildup.
Where do they accumulate most often?
Certain areas of the body are more prone to this:
- Face: T-zone (forehead, nose, chin), around the nostrils, around the lips;
- Body: upper back, arms, front of the thighs, lower legs in winter;
- Hands: skin often weakened by frequent washing, especially in people with dry hands;
- Elbows and knees: areas where the skin naturally thickens due to pressure;
- Heels: increased thickness of the stratum corneum, risk of cracks; calluses require a specific approach;
- Scalp: Dandruff is a separate issue but stems from the same underlying mechanism.
How can you gently remove them?
Three main approaches, to be chosen based on the area and skin type:
- Mechanical exfoliation: fine-grained scrubs (sugar, salt, biodegradable microbeads, bamboo or coconut powders). Best suited for the body; not recommended for sensitive facial skin or inflamed skin;
- Gentle chemical exfoliation: treatments based on AHA (glycolic acid, lactic acid), BHA (salicylic acid), or PHA (gluconolactone) at low concentrations (5–10%). Enzymatic action, no scrubbing involved, best suited for the face and sensitive skin;
- Enzymatic exfoliation: masks containing papaya enzymes (papain) or pineapple enzymes (bromelain), which break down the bonds between dead skin cells. Very gentle, ideal for reactive skin types;
- Washing with an exfoliating bath glove (such as a kessa) once or twice a week on the body;
- Dry brushing with a natural-bristle brush before showering: stimulates microcirculation; avoid on sensitive or eczema-prone skin.
Which natural scrubs should you choose?
A few simple recipes to try—and one bad idea to avoid:
- Fine sugar + vegetable oil (sweet almond, jojoba, olive): a gentle body scrub;
- Fine salt + oil: more exfoliating, best used on rough areas of the body (heels, elbows);
- Coffee grounds + oil: invigorating for the body;
- Ground oatmeal + honey + yogurt: very gentle, suitable for the face;
- Witch hazel hydrosol applied as a compress before exfoliating for gentle preparation;
- Baking soda should be avoided: its highly alkaline pH (≈ 9) permanently disrupts the skin’s natural pH balance (≈ 5.5) and weakens the skin barrier. Its reputation as a scrub is misleading;
- Test each recipe on the inner elbow 48 hours before using it on the rest of the body.
How often should you exfoliate your skin?
The golden rule: not too often, and never on inflamed skin.
- Normal or combination skin: 1 to 2 times a week;
- Oily skin: 2 to 3 times a week; BHAs are recommended;
- Dry skin: once a week, using gentle formulas with AHA or PHA;
- Sensitive or reactive skin: once every 10–15 days; enzymatic exfoliation is recommended;
- Face: Exfoliate separately from the body, using dedicated products;
- Heels and elbows: 2 times a week + immediate occlusive moisturizing;
- In the morning if using a chemical exfoliant, in the evening if using a mechanical scrub; never right before sun exposure.
What signs of over-exfoliation should you watch for?
Over-exfoliation is the leading cause of skin discomfort among exfoliation enthusiasts. Its signs include:
- Persistent redness after applying skincare products;
- A burning or tingling sensation during cleansing;
- Skin that “shines” abnormally, as if it’s tight;
- The paradoxical appearance of small flakes;
- Increased sensitivity to products that were previously well-tolerated;
- Appearance or worsening of blemishes;
- More pronounced reaction to UV rays, more prone to sunburn.
Action: Stop all exfoliation for 2 to 3 weeks, simplify your skincare routine, apply reparative products rich in ceramides and panthenol, and strictly protect your skin from the sun. The skin usually recovers within 3 to 4 weeks.
What should you do for dry heels and elbows?
Thickened areas require a specific regimen:
- Soak for 10 to 15 minutes in lukewarm water with a spoonful of vegetable oil added;
- Gently exfoliate with fine salt and oil using circular motions;
- On the heels: use a natural pumice stone or a gentle foot file (no sharp blades), with a fine grain;
- Pat dry and immediately apply a rich balm: 10–20% urea (keratolytic and moisturizing), shea butter, panthenol;
- For cracked heels: hydrocolloid bandages or cotton socks at night after applying an occlusive balm;
- Repeat 2 to 3 times a week for a 3- to 4-week treatment course;
- If the cracks are bleeding or in cases of diabetes: medical advice is essential, as there is a real risk of infection.
