Stretch marks are one of the most common skin concerns in the world, and they are surrounded by an extraordinary amount of ineffective products and misleading claims. If you have them, you are in the majority. If you have been told a particular cream will remove them, you have been misled. That said, there are things that help, both in prevention and in improving their appearance over time.
What stretch marks are and why they form
Stretch marks, medically called striae distensae, form when the skin is stretched faster than it can accommodate. The dermis, the deeper layer of the skin where collagen and elastin fibres live, tears. The skin surface above does not tear, but the disruption below creates the characteristic appearance: initially pink, red, or purple streaks that over time fade to silver or white.
The most common causes are pregnancy, rapid weight gain or loss, puberty growth spurts, and bodybuilding. Hormones play a role too; elevated cortisol and corticosteroids (including topical steroid creams used long-term) reduce the skin’s ability to stretch and increase susceptibility.
Genetics determines a significant portion of your individual risk. If your mother had significant pregnancy stretch marks, your risk is meaningfully higher. Skin type also matters: darker skin tones can develop stretch marks that are hyperpigmented or hypopigmented relative to the surrounding skin, which affects how they appear and how they respond to treatment.
New versus old stretch marks: why the distinction matters for treatment
Fresh stretch marks (striae rubrae, the red or purple stage) are still an active inflammatory process. Blood vessels in the dermis are involved. This is the stage where treatment has the most potential, because the area is metabolically active and the skin is still remodelling.
Old stretch marks (striae albae, the white or silver stage) are mature scar tissue. The blood supply has receded, the area has lost melanocytes, and the collagen architecture has reorganised. This is significantly harder to treat, and nothing available over the counter will remove them entirely. That is the honest reality.
This distinction is important because most product research is done on newer stretch marks, and results are then implied to apply to all stretch marks. A cream that modestly improves the appearance of fresh striae will have considerably less effect on years-old silver marks.
What has actual evidence
Tretinoin (a prescription retinoid) has the strongest evidence for improving fresh stretch marks. A study published in the Archives of Dermatology found that 0.1% tretinoin cream applied for six months significantly reduced the length and width of new stretch marks compared to placebo. The mechanism is increased collagen synthesis and improved skin structure in the affected area. This does not work on old, white stretch marks and is not safe during pregnancy.
Centella asiatica extract (Cica or gotu kola) has been studied in pregnancy stretch mark prevention and shown modest results. A product containing 1% centella extract reduced the development and severity of stretch marks compared to placebo in a controlled trial. This is a plant compound with genuine evidence, though the effect is preventive rather than corrective.
Hyaluronic acid serums have shown some benefit for new stretch marks in a couple of clinical trials, with modest reductions in appearance. The mechanism is likely hydration-mediated improvement in skin pliability and barrier function during the healing phase.
Keeping the skin well hydrated during periods of stretching (pregnancy, growth spurts) is consistently associated with reduced severity of stretch marks, even if it does not prevent them entirely. Hydrated skin stretches more readily than dry skin, which reduces the mechanical stress on the dermis.
What does not work
Bio-oil, coconut oil, cocoa butter, vitamin E oil: these are among the most heavily marketed products for stretch marks, and the research does not support the dramatic claims. A well-designed randomised controlled trial published in the British Journal of Dermatology found no significant difference in stretch mark development during pregnancy between a group using daily massage with bio-oil and a control group. The massage itself may have had some modest benefit; the oil did not make the difference.
This is not to say these products have no benefit. They keep skin moisturised, which has some value. But they will not remove stretch marks that already exist, and they will not prevent them in people with a strong genetic predisposition. The claims on these products consistently exceed what the evidence shows.
No over-the-counter product removes old white stretch marks. Any before-and-after photograph showing dramatic removal should be viewed with significant scepticism regarding lighting, angle, and potential digital editing.
Professional treatments that have evidence
Fractional laser resurfacing, particularly with non-ablative fractional lasers, has shown meaningful improvements in stretch mark texture and appearance in multiple studies. The laser creates controlled micro-injuries that stimulate collagen remodelling in and around the stretch mark. Multiple sessions are needed.
Microneedling (collagen induction therapy) produces similar results through a different mechanism, creating physical micro-trauma that drives the skin’s repair response. Research suggests it is effective for both new and old stretch marks, with improvement in texture, width, and colour.
Radiofrequency treatments and platelet-rich plasma (PRP) have emerging evidence but are currently less well-studied than laser and microneedling approaches.
The realistic outlook
Stretch marks can be improved but not erased with currently available treatments. Fresh marks respond better than old ones. Professional treatments outperform topical products. Keeping skin well hydrated during high-risk periods is worthwhile even without a guarantee of prevention.
For most people, accepting that stretch marks are a normal part of a body that has grown, changed, and lived is ultimately more useful than chasing treatments that cannot deliver elimination. Improvement is achievable. Perfection is not on the menu, from any product or procedure currently available.