Why skin gets so dry during chemotherapy, and a routine that helps
by Dr. Onco Care Team
on Oct 04 2026
In short
- Treatment weakens the skin barrier, so skin loses water and reacts more easily.
- The basics matter most: short lukewarm showers, a mild cleanser, and moisturiser on slightly damp skin.
- Rashes need to be seen by your care team.
Why treatment dries the skin
Skin is one of the fastest-renewing organs in the body. Chemotherapy acts on fast-dividing cells, so the cells that rebuild your skin are affected along with the cancer. The skin produces less of its natural oil, and the barrier that holds water in becomes thinner and leakier.
Radiotherapy, targeted therapy and immunotherapy can have similar effects. Some targeted medicines, including EGFR inhibitors, commonly cause very dry skin together with an acne-like rash.
What you may notice
- Dry, rough or flaky patches
- Tightness after washing
- Itching, often worse at night
- Stinging from products you used to tolerate
- Small, painful cracks on fingertips and heels
A two-step daily routine
Step 1: cleanse gently
Keep showers short and lukewarm. Hot water strips oil from the skin. Use a small amount of a mild, fragrance-free, pH-balanced cleanser instead of soap, and wash with your hands. Pat dry with a soft towel.
Step 2: moisturise while skin is damp
Apply moisturiser within a few minutes of washing, while skin is still slightly damp. This traps water in the skin. Repeat at least once more during the day, and whenever skin feels tight. Hands need it more often, especially after washing.
Small habits that add up
- Choose fragrance-free products for skin, hair and laundry.
- Wear soft, breathable fabrics next to the skin.
- Use gloves for washing up and cleaning.
- Protect skin from the sun with clothing and shade, and use the sun protection your team recommends.
- Keep nails short and try not to scratch.
- Avoid scrubs, exfoliating acids and retinoids unless your doctor has prescribed them.
When to call your care team
- A new rash, especially a widespread or acne-like rash
- Skin that is cracked, bleeding or painful
- Itching that is severe or keeps you awake
- Signs of infection: pus, warmth, swelling or fever
Where Dr. Onco fits
The daily duo is built for this. Daily Cleanser is sulfate-free and pH-balanced, with ceramides and lipids put back as you wash. Daily Moisturizer follows with skin-identical ceramides, niacinamide, panthenol and colloidal oatmeal in a light, fast-absorbing cream. Both are free from fragrance, alcohol and dyes.
This guide is for general education. It does not replace the advice of your care team. Dr. Onco products are cosmetics, not medicines.
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