Red stretch marks are a skin change in which the collagen and elastic fibre structure of the dermis is damaged as the skin stretches rapidly. Early on they look red or purple, and over time the colour fades towards white striae. Laser treatment is one option, and MiraJet — which delivers drug into the skin without a needle — can also be used depending on skin condition and treatment goal. Red stretch marks involve both early vascular change and tissue damage, so the treatment that improves colour and the approach that improves texture and elasticity should be understood separately.
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Why do red stretch marks appear?
Stretch marks are linear marks caused when the skin stretches quickly over a short period and the collagen and elastin fibres in the dermis are damaged. Pregnancy, rapid growth in adolescence, weight gain and loss, and changes in muscle mass are the main causes. They commonly appear where skin stretches — the abdomen, thighs, buttocks, breasts and inner arms. Red stretch marks are the early stage, medically termed striae rubrae.
They look red or purple because of vascular change within the skin, and can progress over time to faded white or silver marks. Because red stretch marks are the stage where colour change is prominent, the treatment plan should consider vascular change and tissue damage together.
How does a stretch mark laser work?
Laser treatment for red stretch marks aims to reduce the red tone and help improve the texture and elasticity of damaged skin. Vascular lasers are used to reduce the vascular redness, and fractional lasers to induce skin regeneration.
Vascular lasers use light that reacts selectively with haemoglobin in the blood to reduce redness. Fractional lasers create fine thermal stimulation that induces collagen remodelling during recovery, used to improve the depressed texture and surface of stretch marks.
Early stretch marks that are mainly red and older marks that have turned white have different treatment goals: colour improvement for red marks, and improvement of texture and atrophic tissue for older ones. Laser type and delivery vary with the colour, depth and extent of the striae.
In a study treating striae with a 585 nm vascular laser, erythema in red striae decreased moderately, while white striae showed no noticeable change.[1]
What is needle-free MiraJet?
MiraJet is a needle-free drug delivery device that uses laser energy to move drug into the skin. Instead of inserting a metal needle as an ordinary injection does, it uses a 2940 nm erbium YAG (Er:YAG) laser to create instantaneous pressure and fires the liquid drug in a fine jet. In the process fine channels form in the skin and the drug is delivered inside. Because the delivery method differs from a needle injection, it can reduce the burden of needle insertion.
The important point is that MiraJet is not itself a laser that removes stretch marks or erases redness. It is a device for delivering drug, and the treatment purpose depends on which drug is used. For red stretch marks, a drug is chosen to match skin condition and treatment goal, and combined with other laser treatment where needed.
Read alsoPostpartum stretch marks and MiraJet are covered in “Red and white stretch marks after childbirth” (Korean).
How does MiraJet deliver drug into the skin?
The process has three steps.
STEP 01. Laser emission: the laser delivers energy to the liquid inside the device.
STEP 02. Instant pressure: the energy converts into physical pressure, creating the force to fire the drug.
STEP 03. Micro-jet delivery: the drug passes the skin surface and is delivered inside.
This differs from injecting drug with a needle. MiraJet can adjust delivery conditions through the choice of nozzle, and delivery is planned around skin condition and the treated area. Its key characteristics are that no needle is inserted and that drug is delivered inside the skin as a fine jet. The type and concentration of drug, the delivery depth and treatment conditions must be decided by the medical team according to the treatment purpose.
How is MiraJet used for red stretch marks?
When planning treatment, first assess how clear the red tone is, how deep the striae are, and whether there is atrophy or depression at the skin surface. Then vascular laser, fractional laser or a drug delivery method is chosen according to the goal.
MiraJet can be used as an adjunct that delivers drug into the skin — for example when drug delivery for skin regeneration is planned. Using MiraJet does not in itself remove the vascular redness of red striae; the properties of the drug and the treatments used together must be understood separately.
Red tone is prominent: the treatment method is reviewed around improving vascular change.
The surface is depressed or texture has changed: lasers or other methods that induce skin regeneration are considered.
Drug delivery is combined: the drug and its purpose are confirmed before deciding on MiraJet.
Red stretch marks are therefore best approached by separating the goals of colour improvement, texture improvement and drug delivery, rather than by a single device name.
In a systematic review of 151 studies (4,806 treatments) of stretch mark treatment, complete resolution was rare, and response tended to be better in red striae.[2]
Aftercare
After laser treatment or MiraJet there may be temporary redness, swelling, heat or small pinpoint marks. During recovery, protecting the skin barrier and reducing irritation matters. Avoid rubbing the treated area firmly or removing keratin forcibly, and use moisturiser so the skin does not dry out. On exposed areas, use sunscreen to reduce the risk of pigmentation. Right after treatment, avoid saunas or hot baths for the period advised.
Aftercare and recovery time depend on the laser and drug used and the degree of skin irritation. If pain or swelling becomes severe, or blisters or oozing appear, be checked at the clinic where you were treated.
Red stretch marks: common myths and facts
| You may think… | In practice |
|---|---|
| "Treatment is the same whatever the colour." | Red and white striae differ in response and treatment goal. |
| "One session removes stretch marks." | Most improve gradually over several sessions. |
| "You can wait until they turn white." | Response tends to be better in the red stage. |
In a stretch mark consultation I look first at whether the colour is red or already white. In the red stage I plan treatment to reduce the vascular response; in white striae I aim at dermal regeneration.
Red stretch marks are a change in which the dermal structure is damaged as the skin stretches: red tone is prominent early and can fade towards a white scar over time. Treatment uses vascular lasers and lasers for skin regeneration, and MiraJet can deliver drug inside the skin without a needle. Because reducing redness and delivering drug have different purposes, their roles should be separated according to the colour, depth and texture of the striae.
🔬 The research behind this article
These are the international journal papers that support the content above. Select a title to open the abstract on PubMed.
- Dermatologic Surgery 2003 — 585 nm pulsed-dye laser for striae rubra and albaJiménez GP, Flores F, Berman B, Gunja-Smith Z. Treatment of striae rubra and striae alba with the 585-nm pulsed-dye laser. Dermatol Surg. 2003;29(4):362-5.Key: erythema reduced in red striae, no change in white striaeText [1] · PMID 12656814 · DOI
- Dermatologic Surgery 2024 — systematic review of 151 studies and 4,806 treatmentsZhu CK, Mija LA, Koulmi K, Barankin B, Mukovozov I. A Systematic Review on Treatment Outcomes of Striae. Dermatol Surg. 2024;50(6):546-552.Key: better response in red striaeText [2] · PMID 38452322 · DOI
🎬 Watch: Dr. Park Seong-Soo on video
Korean-language videos from BongBong Plastic Surgery's official channel and Dr. Park's channel, “Seongsu-ro Doctor”. Titles are translated for reference; selecting one opens YouTube.
- Stretch marks: leave them and they last for life? Every option reviewedSeongsu-ro Doctor · 2025.09.17
- Stretch marks: when home care is not enoughSeongsu-ro Doctor · 2025.09.21
- MiraJet: skin treatment without the painSeongsu-ro Doctor · 2024.06.12
Frequently asked questions
Can red stretch marks be improved with laser treatment?
A. Vascular lasers to reduce redness and fractional lasers to improve texture are used. The goal and method differ with the colour and depth of the striae.
How is MiraJet different from an ordinary injection?
A. An ordinary injection inserts a needle to inject drug; MiraJet uses pressure generated by laser energy to deliver drug as a fine jet, without inserting a metal needle.
Can MiraJet alone treat red stretch marks?
A. MiraJet is a drug delivery device, so its role differs from a vascular laser that treats redness directly. A suitable drug and combination with other treatments can be considered.
How many sessions are needed?
A. The number depends on the extent and depth of the striae and the treatment used. Skin condition is assessed before treatment and progress reviewed at intervals when planning.
📖 References
Select a [number] in the text to jump to the source, and ↩ to return. Only papers whose title, journal and year were verified on PubMed are included.
- Jiménez GP, Flores F, Berman B, Gunja-Smith Z. Treatment of striae rubra and striae alba with the 585-nm pulsed-dye laser. Dermatol Surg. 2003;29(4):362-5. — Dermatologic Surgery 2003 — 585 nm pulsed-dye laser for striae rubra and alba. ↩
- Zhu CK, Mija LA, Koulmi K, Barankin B, Mukovozov I. A Systematic Review on Treatment Outcomes of Striae. Dermatol Surg. 2024;50(6):546-552. — Dermatologic Surgery 2024 — systematic review of 151 studies and 4,806 treatments. ↩
BongBong Plastic Surgery · Dr. Park Seong-Soo, Medical Director
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