A stretch mark is a tear in the dermis — collagen and elastin that gave way under stretching faster than they could remodel. Red-purple marks are the fresh, active stage; white marks are the settled scar. The stage decides the strategy, and the window matters.
WhatsApp Dr Sin Yong →When skin stretches faster than its collagen can remodel — pregnancy, adolescent growth, rapid weight or muscle gain, corticosteroid exposure — the dermis tears in parallel lines. Fresh tears are striae rubra: red-to-purple, still vascular and biologically active. Left alone they mature into striae alba: pale, slightly sunken atrophic scars. The distinction is not cosmetic trivia — active rubra respond meaningfully better to collagen-inducing treatment than settled alba, which is why the treatment window is worth knowing about during and after pregnancy or bulking.
Because striae are dermal scars, treatments that work are collagen-induction treatments. A systematic review and meta-analysis of microneedling for striae distensae reports significant improvement across trials [1], and fractional energy platforms extend the same principle with heat-driven remodelling — the same device families covered in the acne scar literature [2]. Dr Sin Yong's stretch mark programme and RF microneedling stage treatment by striae age and skin type — pigment-safe settings matter in Singapore skin.
No cream removes a dermal scar; moisturised scar tissue is still scar tissue. Bio-oils and cocoa butter have affection but not evidence for removal. Tanning worsens contrast — the scar tans differently from surrounding skin. And “stretch mark removal” as a phrase over-promises: the evidence supports visible softening and flattening, not erasure. That is worth having — sold honestly.
“A stretch mark is a scar, and scars remodel — they do not vanish.”
— Dr Sin Yong
Genetics dominates. Steady weight change and supple, hydrated skin may reduce severity; nothing prevents striae in strongly predisposed skin — and that is not a failure of discipline.
Rapid muscle gain stretches skin exactly as fat gain does. Shoulders, chest and thighs are classic sites in fast bulks.
Yes — meaningfully. Rubra are biologically active and respond better to collagen induction. If treatment is on your mind, earlier is genuinely better.
It carries the strongest device evidence, including meta-analysis-level support for improvement. Multiple sessions and realistic expectations are part of the deal.
Treated marks remodel and stay remodelled — but new stretching creates new marks. Stability protects results.
Rarely: sudden widespread striae with other changes can accompany hormonal conditions or steroid excess. New unexplained striae without a growth/weight cause deserve a medical look.