Stretch Marks: Why They Happen and What Actually Helps Fade Them
Stretch marks (striae) are scars in the dermis, formed when skin is stretched faster than its collagen and elastin can adapt. They start red or purple (striae rubrae) and mature into pale, slightly sunken silver lines (striae albae). Red marks respond best to treatment; mature white ones can be softened and evened, but not erased.
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Explore the Hydrating Body Lotion →What causes stretch marks?
Stretch marks form when the dermis — the supportive layer beneath the surface — is mechanically stretched beyond what its collagen and elastin fibres can accommodate. Those fibres tear, inflammation follows, and the skin repairs with disorganised scar tissue that sits slightly below the surrounding surface. The epidermis over a stretch mark also thins, which is why mature marks look shiny and pale.
Two forces drive this. The first is mechanical: rapid growth from pregnancy, puberty, weight gain, or muscle gain in the gym. The second is hormonal: cortisol and other glucocorticoids reduce fibroblast activity, so the skin makes less collagen exactly when it needs more. This is why stretch marks are so common during puberty and pregnancy, and why long-term oral or potent topical steroid use is a known cause.
Who gets stretch marks?
Most people, eventually. Prevalence during pregnancy is commonly reported between 50% and 90%, and adolescent striae affect a large share of both boys and girls. The strongest predictor is family history — if your mother had them, your risk is significantly higher. Other risk factors include a faster rate of weight change, younger age at pregnancy, higher birth weight in pregnancy, and conditions such as Cushing's syndrome or Marfan syndrome. Nothing about having stretch marks reflects poor skincare.
Red vs white stretch marks: why the stage matters
| Stage | Appearance | Treatment outlook |
|---|---|---|
| Striae rubrae (new) | Red, pink or purple; sometimes itchy and slightly raised | Best window. Active blood supply and ongoing remodelling mean topicals and procedures work far better |
| Striae albae (mature) | Pale, silvery-white, slightly depressed and shiny | Limited. Texture and contrast can be improved; full removal is not realistic |
The practical takeaway: if your marks are still red or purple, start now. That is the phase where intervention makes the biggest difference.
What actually works on stretch marks?
The honest evidence hierarchy, strongest first:
- Tretinoin (prescription retinoid): the best-evidenced topical for early red striae. It stimulates collagen production and has shown measurable reduction in length and width in controlled studies. Not safe in pregnancy or while breastfeeding — this is a post-pregnancy option only, and requires a doctor.
- Centella asiatica preparations: moderate evidence, particularly for prevention during pregnancy. Centella supports collagen synthesis and is well tolerated — see our guide to centella asiatica for skin.
- Hyaluronic acid: modest but real evidence for improving early striae when massaged in daily.
- In-clinic procedures: fractional lasers, microneedling and radiofrequency have the strongest results for mature white marks, because they work at the depth where the scar actually sits. Expect a course, not a session.
- Consistent moisturising and massage: the effect is modest, but daily massage with any emollient improves comfort, itch and skin pliability, and the massage itself may help. Its real value is that it is sustainable.
Notably absent: cocoa butter and olive oil, which have been tested against placebo in randomised trials for pregnancy stretch marks and did not outperform it. They feel lovely. They do not prevent striae.
Can you prevent stretch marks?
Partly, and expectations should be modest. Genetics set the baseline and you cannot change it. What you can influence is the rate of stretch and the condition of the skin while it happens: a gradual rather than rapid rate of weight or muscle gain, adequate protein, vitamin C and zinc for collagen synthesis, good hydration, and daily topical care on high-risk areas — abdomen, hips, thighs, breasts, upper arms. Starting a centella- or hyaluronic-acid-containing product early in pregnancy, with your doctor's approval, is the most evidence-supported preventive step available. See our pregnancy-safe skincare guide for what to avoid.
Do stretch marks fade on their own?
Yes — the colour does. Red and purple striae naturally lose their vascular flush over 6 to 12 months and settle into paler lines that are considerably less noticeable, particularly against lighter surrounding skin. The textural change is permanent. On deeper Indian skin tones, the contrast can be more visible for longer because the surrounding skin is more pigmented while the mark is hypopigmented, which makes daily sun protection on exposed areas genuinely worthwhile. The same logic applies to evening out body tone generally.
What about niacinamide and body skincare?
Niacinamide will not remove a stretch mark — no topical short of a prescription retinoid meaningfully remodels dermal scar tissue. What it does do is support the surrounding skin: it strengthens the barrier, improves ceramide production, reduces water loss and evens overall tone, so the contrast between mark and skin is less stark and the area looks smoother and healthier. Combined with ceramides, it is the sensible daily-maintenance layer around whatever targeted treatment you choose. A simple, repeatable body-care routine beats an elaborate one you abandon.
The bottom line
Stretch marks are scars, not a skincare failure, and roughly three-quarters of people get them. Treat them early while they are still red, when tretinoin (post-pregnancy), centella and hyaluronic acid have real evidence behind them. For mature white marks, in-clinic energy-based procedures are the only approach with meaningful results, and daily niacinamide-and-ceramide body care keeps the surrounding skin even and comfortable. Anyone promising complete removal from a cream is selling something.
Frequently asked questions
Can stretch marks be removed permanently?
No topical removes them completely. Fractional laser, microneedling and radiofrequency can substantially improve texture and appearance, but stretch marks are dermal scars and some trace usually remains.
Does cocoa butter prevent stretch marks in pregnancy?
Randomised trials have found cocoa butter no better than placebo at preventing pregnancy stretch marks. It is a pleasant moisturiser, not a preventive treatment.
Can I use retinol on stretch marks during pregnancy?
No. Retinoids including tretinoin and retinol are not recommended during pregnancy or breastfeeding. Centella asiatica and hyaluronic acid preparations are the safer options — confirm with your doctor.
How long do red stretch marks take to fade?
The red or purple colour typically fades over 6 to 12 months as the marks mature into paler lines. Treating during this red phase gives the best results.
Do stretch marks mean I gained weight too fast?
Rapid weight change is one factor, but genetics and hormones matter more. Many people with gradual weight change still develop striae, and many with rapid change do not.
Does drinking water help stretch marks?
Adequate hydration supports overall skin health but will not prevent or fade stretch marks on its own. Topical hydration plus a targeted active is the more useful approach.