Hair, skin and nails after treatment
When hair starts growing back and why it comes back different, what to do about dry or sensitive skin, and how long damaged nails take to recover.
5 min read · Part of Living Well
Written by The LifeAfterward editorial team from the sources listed at the end of this page.
Not individually reviewed by a clinician. This page is written from published clinical guidance, listed in full at the end, and is general information rather than medical advice — your own team knows your case. See our editorial standards.
Last checked against its sources · Last updated · Next check due
In short
- Hair usually starts regrowing three to six weeks after chemotherapy ends, and often comes back a different texture or colour for a year or two.
- Permanent hair thinning is uncommon but recognised after some regimens — worth naming rather than waiting silently.
- Skin stays dry, sensitive and sun-reactive for months, and skin in a radiotherapy field needs protecting for life.
- Nails grow out slowly: fingernails take about six months to replace themselves, toenails up to eighteen.
What this means
These are the effects people are told not to worry about because they are not dangerous — and they are the ones staring back from the mirror every morning. They are also the ones with the clearest timelines, which helps: knowing that the fuzz appearing at six weeks is exactly on schedule, and that the strange curl will probably relax within two years, makes the wait considerably easier.
Hair, and the timeline
- Weeks 3–6 after the last treatment: soft down appears. It may be a different colour and is often very fine.
- Months 2–3: proper growth, roughly a centimetre a month.
- Months 3–6: enough to go without a covering if you want to.
- Year 1–2: texture and colour usually settle back towards what they were. "Chemo curl" — hair that returns curly when it was straight — is common and usually temporary.
- Eyebrows and eyelashes typically lag behind scalp hair by a few weeks.
Treat new hair gently: mild shampoo, a wide-toothed comb, and no bleach, permanent colour or chemical straightening for around six months — new hair is fragile and the scalp is still recovering. Heat styling is best kept light.
If regrowth is patchy or has not started by three months
Persistent alopecia after chemotherapy is uncommon but real, and is better raised than endured — it is associated with particular regimens, and with stem cell transplant. Tell your team. There are medical options worth discussing, and hair loss support services exist that most people are never told about.
Skin
- Dryness and sensitivity
- Very common for months. Unperfumed emollients, lukewarm showers rather than hot baths, and a soap substitute if ordinary soap stings.
- Radiotherapy skin
- Skin in the treated area may stay darker, drier or slightly thickened, and small visible blood vessels can appear over time. It burns much more easily and needs high-factor protection or covering for life.
- Photosensitivity
- Several drugs make skin react far more strongly to sun, sometimes for months after treatment ends. Ask which of yours does.
- Radiation recall
- A red, inflamed reaction in a previously irradiated area, triggered by later chemotherapy or occasionally sun. Report it — it is treatable and worth recognising.
- Rashes from targeted therapy
- Acne-like rashes with some drugs, and redness or peeling of palms and soles with others. These have specific treatments; do not treat them as ordinary acne.
- Itch
- Common, and treatable. Persistent itch without a rash should be mentioned, particularly after lymphoma.
Nails
- Ridges and horizontal lines mark the weeks of treatment and simply grow out — fingernails take around six months to replace fully, toenails up to eighteen.
- Discolouration, brittleness and lifting from the nail bed are common after taxanes and usually resolve.
- Keep nails short and dry, moisturise the cuticles, wear gloves for washing up and gardening, and avoid acrylics or gels while nails are fragile.
- Report redness, swelling or pain around a nail fold — infection there is common after treatment and needs treating rather than waiting.
- A dark streak in a nail that is new, widening, or affects one nail only should be shown to a doctor, particularly after melanoma.
Sun, for good
- Shade in the middle of the day, then clothing and a hat, then sunscreen — in that order of effectiveness.
- Treated skin and a scalp with new hair burn quickly and unexpectedly. Both need covering.
- No sunbeds.
- Ask about vitamin D if you are now avoiding sun exposure most of the time.
If you had melanoma or another skin cancer, the melanoma guide covers self-examination and follow-up in detail.
What to ask your healthcare team
- Is my hair regrowth what you would expect at this point?
- Are any of my medications making my skin more sensitive to sun?
- What can I use on this rash, dryness or itch?
- Should I have this nail or skin change looked at?
- Is there a wig or hair loss service I can be referred to?
Save questions to My Journey so you have them in the room, or use a ready-made list.
When to seek medical advice
Contact your healthcare team if you have:
- A rash that is spreading, blistering or painful.
- Redness, swelling or pus around a nail or cuticle.
- A new dark streak in a nail, or a mole or spot that is changing.
- Skin in a radiotherapy field that breaks down, weeps or does not heal.
- Hair that has not begun regrowing three months after treatment ended.
Get emergency help the same day if you have:
- A widespread rash with fever, or blistering and peeling skin — this can indicate a severe drug reaction and needs urgent assessment.
- A hot, spreading red area with fever — possible cellulitis.
If you are worried and unsure, contact your team anyway — they would far rather hear from you unnecessarily than late. What to do in an emergency.
Common questions
When does hair grow back after chemotherapy?
Soft regrowth usually appears three to six weeks after the last treatment, with proper growth of roughly a centimetre a month after that. Most people have enough to go uncovered by three to six months. Texture and colour often change at first and usually settle within one to two years.
Why has my hair grown back curly?
"Chemo curl" is a well-recognised change in hair texture after chemotherapy, and it is usually temporary — most people find their hair returns towards its previous texture over one to two years. Colour changes are common too.
How long do damaged nails take to grow out?
Fingernails replace themselves over about six months and toenails can take up to eighteen. Ridges and lines from treatment simply grow out. Any redness, swelling or pain around a nail should be reported, since infections there are common after treatment.
Sources
This page was written from the guidance below and checked against it on . Links are re-checked at each review — see our editorial standards.
- ASCO (Cancer.Net). Survivorship
- Macmillan Cancer Support. After treatment finishes
- National Cancer Institute (US). Late effects of cancer treatment
- Cancer Research UK. Coping with cancer
- National Cancer Institute (US). Survivorship — coping with cancer