Stretch Marks While Gaining Weight: Why They Appear, What Fades
Stretch marks appear when skin is stretched faster than it can adapt, so quick weight gain is the classic trigger. They fade on their own from red or purple to pale silver over months, oils and creams do only a little, and slower gain is the best prevention. One exception matters: new, wide purple marks with a puffy face or swelling can point to hidden steroids, and that needs a doctor.
Quick facts
- Cause: fast stretching tears the skin’s inner support layer.
- Prevention: gain at about 0.25 to 0.5 kg a week.
- What fades them: time, mostly. Early red marks respond best to any care.
- Oils and creams: keep skin comfortable; they don’t erase marks.
- Red flag: purple marks plus moon face, swelling or rising sugar, especially after a gainer powder.
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You finally put on weight. Now there are thin lines on your upper arms, hips or thighs. That can feel unfair, like the body is punishing you for doing exactly what everyone told you to do, and it’s one of the most common reasons people quietly give up on a gain plan halfway through. This article from our Desi Weight Gain series explains why the lines appear, what honestly helps, and the one pattern that needs medical attention.
First, a word on why you’re gaining
If you’re trying to gain because weight fell without a reason, or you’ve been unable to gain despite eating well, see a doctor before anything else. Thyroid, diabetes, TB, coeliac disease, worms, depression and eating disorders are common causes, and a doctor can check them simply.
Why stretch marks appear when you gain weight
Think of your skin as a knitted sweater. The top layer is what you see. Underneath sits the dermis, full of stretchy fibres (collagen and elastin) that hold everything together. Stretch it slowly and the knit adjusts. Stretch it quickly, over a few weeks of heavy eating or a sudden growth spurt, and some of those fibres snap, leaving a line where the support underneath has thinned while the surface stays whole. That’s the mark.
Doctors call them striae. Two kinds. New ones (striae rubrae) are red, pink or purple because small blood vessels show through. Old ones (striae albae) turn white or silvery and sit slightly lower than the skin around them, with a faintly wrinkled, tissue-paper feel when you run a finger across, and that change from red to silver can take anywhere from several months to a couple of years depending on your skin, your age and how deep the tear went.
Where they usually show up
- Upper arms and inner arms, as the muscle and fat fill out.
- Thighs, hips and buttocks.
- Chest, and the lower back.
- Belly, especially if gain goes there first.
Teenagers going through growth spurts and people building muscle fast get them too, and genes play a very big part, so if your mother, aunts or older siblings marked easily during pregnancy or growth, you probably will as well, however carefully you pace things. Unfair, but true.
Stretch marks are a sign of speed, not failure. Slow the gain and fewer appear.
How to lower the chance of new marks
- Gain slowly: aim for about 0.25 to 0.5 kg a week. That usually means a surplus of roughly 300 to 500 kcal a day, not 1,000.
- Weigh weekly: if you’re up more than 1 kg in a week for two weeks running, cut back slightly.
- Train steadily: increase weights gradually rather than jumping; muscle that balloons fast also stretches skin.
- Moisturise daily: a plain fragrance-free cream or a few drops of coconut or almond oil after a bath keeps skin supple and less itchy. Nothing fancy needed. Honestly.
- Drink normally and eat protein: skin builds collagen from protein and vitamin C, so daal, eggs, dahi, guava (amrood) and kinnow all belong on the plate.
What fades existing stretch marks, honestly
| Option | Honest verdict |
|---|---|
| Time | The biggest factor. Red marks fade to silver over 6 to 12 months or longer. |
| Coconut, almond, olive oil, cocoa butter | Soothe dryness and itch; no good evidence they remove marks. |
| Aloe vera gel | Pleasant and cooling; any fading effect is small at best. |
| Prescription retinoid creams | Can help early red marks a little; a doctor decides. Never in pregnancy or when trying to conceive. |
| Laser, microneedling | Can soften the look in a clinic; costly, several sessions, won’t make skin perfect. |
In short, massage in whatever you like for comfort, but spend money only after reading the promise carefully, because no cream, serum or imported oil turns a white mark back into normal skin, and anything claiming to do so in days is selling a hope, not a result. Keep your receipts.
Myth: stretch marks mean you’re gaining unhealthy weight
Not necessarily. Athletes, growing teenagers, bodybuilders, new mothers and perfectly healthy people gaining a few kilos of muscle on a sensible plan all get them, sometimes in large numbers. They say more about speed and genes than about the quality of your weight. What does matter is the rare pattern in the next section.
See a doctor soon if new marks are wide (wider than about 1 cm), deep purple, and come with a round “moon” face, a fatty hump at the back of the neck, swollen ankles, easy bruising, weak thighs, mood swings, acne or rising blood sugar. That pattern can mean too much cortisol, and a very common cause here is hidden steroids in unlabelled weight gain powders, syrups or “herbal” gainers sold online or by some hakeems. Stopping steroids suddenly can be dangerous, so don’t quit anything alone: take the packet with you and let the doctor guide the next steps. Marks that bleed, itch badly or appear without any weight change also deserve a look.
Our full explainer on weight gain powders and the hidden steroid risk covers how to spot those products.
In desi homes: the traditional fix
Grandmothers reach for warm coconut or mustard oil, rubbed in slowly after the evening bath while the skin is still damp, haldi with malai, or a paste of besan and dahi. Oil massage is kind to dry skin, costs almost nothing, feels soothing on a winter evening and is harmless for most people, although mustard oil can sting sensitive skin and should never go on broken or freshly waxed areas. Haldi can stain and occasionally irritate, so patch test on the inner arm first and wash it off after 10 to 15 minutes. None of these removes marks; they just make skin feel cared for, which is worth something. Skip lemon juice on stretch marks: it stings and can darken skin in the sun.
If your marks are from pregnancy rather than weight gain, see our guide to stretch marks after pregnancy, which covers the safe options for that time.
Did you know?
Stretch marks can’t tan. Ever. The damaged patch has fewer pigment cells, so after sun exposure the marks can look paler against darker surrounding skin. Sunscreen on exposed areas keeps that contrast lower.
Stretch marks and weight gain: common questions
Why do I get stretch marks when I gain weight?
Fast gain stretches the skin’s support layer faster than it can adjust, so some fibres tear. Genes decide a lot about how easily this happens.
Do stretch marks from weight gain go away?
They fade a great deal, from red or purple to pale silver, but rarely vanish completely. Most of the fading happens over the first year.
How can I gain weight without getting stretch marks?
Gain slowly, about 0.25 to 0.5 kg a week, keep skin moisturised and build training gradually. Some people still get a few because of their genes.
Does coconut oil remove stretch marks?
No. It keeps skin soft and less itchy, which is pleasant, but it doesn’t rebuild torn fibres.
Why are my stretch marks purple?
New marks are purple or red because tiny blood vessels show through the thinned skin. If they’re very wide and come with a puffy face or swelling, see a doctor.
Can weight gain powders cause stretch marks?
Unlabelled gainers that hide steroids can cause wide purple marks along with a moon face and swelling. See a doctor, and bring the packet.
Are stretch marks from gym workouts the same?
Yes. Fast muscle growth in the shoulders, chest and arms stretches skin the same way. Slower progression helps.
Do stretch marks on arms mean something is wrong?
Usually not; upper arms are a common spot during gain. Wide purple marks with other body changes are the exception.
Do teenagers get stretch marks while growing?
Very often, during growth spurts, even without much weight change. They fade with time and aren’t a reason for creams or diets.
Is laser worth it for stretch marks?
It can soften their look but costs a lot and takes several sessions. See a qualified dermatologist rather than a beauty parlour, because lasers and needles used badly on brown skin can leave dark patches that last longer than the marks themselves ever would have.