What should you know about CO2 for stretch marks?

Stretch marks form when skin stretches and collagen and elastin structures change. CO2 energy can create microscopic treatment zones in the affected skin, followed by a healing response that may make the marks less noticeable. Newer reddish or purple marks and older pale marks may respond differently, and the abdomen, thighs, hips, breasts, and other areas have different healing needs.

The treatment may cause heat, redness, swelling, tenderness, peeling, or temporary darkening. A clinician should distinguish stretch marks from another rash or scar before recommending a procedure.

Bring a clear history of pregnancy, growth or weight change, steroid use, skin conditions, previous procedures, and pigment changes after irritation. Ask whether the marks are suitable for fractional treatment and how your skin tone affects aftercare.

Follow preparation instructions about sun exposure and skincare. After treatment, cleanse gently, keep the area moisturised as advised, avoid friction and picking, and protect exposed skin from sunlight. Other options to discuss include [Fractional Laser Treatment](/treatments/laser-and-energy/fractional-laser-treatment/), [Microneedling](/treatments/aesthetic-procedures/microneedling/), [RF Microneedling](/treatments/laser-and-energy/rf-microneedling/), and [Carboxytherapy](/treatments/aesthetic-procedures/carboxytherapy/).

Contact the clinic if pain, warmth, swelling, or redness keeps increasing, or if you see pus, spreading blisters, fever, or marked colour change. Seek urgent care for severe swelling, breathing difficulty, or symptoms involving an area treated near the eyes.

Ask which marks are being treated, what improvement is realistic, how many healing stages you should expect, what happens if pigment becomes darker, and when you can resume exercise, hair removal, and normal skincare.