Stretch marks after weight loss: do they go away?
Stretch marks after weight loss usually fade and change from red or purple to pale or silvery lines, but in most people they do not disappear completely. [1, 3] No cream has strong evidence for removing them, and the better results in studies come from procedures such as microneedling and some lasers, still with realistic expectations. [1, 4, 5]
The basic mechanism is simple: the skin was stretched for a long time while weight was gained, then the weight came off quickly, and the fibres that give skin its springiness broke and left streaks. This article ranks the evidence honestly: what can genuinely help, what will not change anything, how stretch marks differ from loose skin, and how to lower the chance of new marks if you are still losing weight.
At La Rose Clinics, the weight-management team led by Dr Shimaa Fouad assesses skin after weight loss at the Maadi branch and the Fifth Settlement branch, and explains the options that suit your case after an examination. You can reserve a visit through Book your appointment.
Why stretch marks form, and why rapid weight loss can bring them out
Skin contains a network of collagen and elastin fibres that lets it stretch and spring back. When skin stretches or shrinks faster than it can cope with, those fibres tear and streaks appear in the deeper layer of the skin. [3] Reviews describe a multifactorial process, with changes in collagen, elastin and other proteins, and the exact cause is still not fully understood. [4, 5]
The recognised triggers are pregnancy, puberty, fast weight change in either direction, rapid muscle growth, long-term steroid use and family history. [1, 3] So if close relatives have stretch marks, you are more likely to get them too. Skin that stayed stretched for years during significant weight gain also loses some structural quality, which makes it less able to recover afterwards. [9]
One point about weight-loss injections: the sources we read talk about the speed and size of the change in weight, and they do not single out any particular drug as a cause of stretch marks. So if a large amount of weight comes off in a short time, whether through diet or medication, the skin bears the strain if it cannot adapt in time. If you are on that kind of treatment, you may also want to read about facial volume loss with GLP-1 drugs, because the same idea of fast loss affects the face.
One reassuring point: stretch marks are not harmful to health, and the concern is mainly cosmetic. [1, 2] If they appear widely and quickly without a clear reason, that is a reason for a medical assessment, covered in the section on when to see a doctor.
Red versus white stretch marks: the difference and why it matters for treatment
New marks are red, pink, purple or brown, and they are darkest when they are fresh. [1] The reason is that small blood vessels under the surface are still visible and the skin is mildly inflamed. Over time the colour fades and the marks turn into shiny silver or white lines. [3]
This difference matters in practice, because the evidence broadly says treatment is easier on newer marks. [3] In one microneedling study, the improvement was greater in red marks than in white ones. [11] Pulsed dye laser reduces redness but has little effect on texture, and it generally does not work on white marks. [5, 6]
So if you can still see red or purple, that is the stage with the widest set of options. If the marks are years old and white, procedures can still improve the texture, but the expectation should be that they get better, not that they are wiped away. [4, 5]
A note on skin tone: in darker skin, any strong heat-based procedure carries a higher chance of pigment change after inflammation, so the device and the energy level are chosen with care. [5] This is part of the reason an individual assessment matters more than any general list.
Creams: what they can do and what they cannot
The honest position is that the evidence for creams is weak. The NHS says there is very little evidence that creams work, and that retinoid creams (tretinoin) or hyaluronic acid may help on new marks. [1] That fits a scientific review which found tretinoin helped in several studies, including early red marks, with temporary redness and scaling, and that hyaluronic acid appears to increase collagen. [4]
The same review adds that strong evidence is scarce and no single modality is enough on its own. [4] A more recent review noted that tretinoin mostly plays a supporting role, results vary with strength, and side effects can include redness, itching and burning. [5] Duration matters too, since retinol creams may need at least six months of regular use before any effect shows. [3]
What about oils and butters? Cocoa butter, coconut oil, olive oil and almond oil are not supported by evidence for stretch marks. [3] A Cochrane review of creams for preventing pregnancy stretch marks, covering six trials and 800 women, found that creams and oils did not significantly reduce stretch marks compared with placebo or no treatment, and that there was no high-quality evidence for any topical product. [7] The NHS says the same: there is no reliable evidence that creams remove them. [2]
The practical conclusion: if you try a cream, expect at most a modest effect on newer marks, used regularly for a long period and after checking with your doctor, and the earlier you start the better. [3] A cream alone will not turn old white lines back into smooth skin. Skin boosters injected into the face, which you can read about in face skin boosters, are not studied here as a treatment for stretch marks, so do not carry those expectations over to the body.
Procedures: microneedling, lasers and radiofrequency, and what the evidence shows
Procedures have relatively better evidence than creams, but the picture is not ideal. A 2019 review found that fractional lasers perhaps gave the greatest benefit, yet it described the evidence as scarce and said no single approach is enough. [4] A 2022 review said there is no gold standard, trials are small, often 10 to 50 patients, and combinations tend to work better but with limited evidence. [5]
Microneedling: two studies in the 2019 review favoured it over fractional laser and over microdermabrasion. [4] It is less likely to cause pigment change because it does not use heat, so it suits darker skin better. [5] A small open-label study of four monthly sessions reported improvement in both red and white marks, with redness the most common side effect, settling within about eight days, but it was small and funded by a device manufacturer, so treat the results with caution. [11] More generally, most people need between three and six sessions. [3]
Fractional lasers (carbon dioxide or erbium): these are the most used, and higher energy improves results but raises the risk of pigment change. [5] Fractional erbium laser suits white marks. [5] Improvement after laser can continue for up to a year, and side effects include tiny white bumps and either darker or lighter patches. [3] Pulsed dye laser helps redness only. [5, 6]
Radiofrequency with microneedling gives results comparable to fractional CO2 laser with less pigment change, but it is more painful. [5] Platelet-rich plasma combined with microneedling has been reported to do better, though the evidence is still limited. [5] Most of these treatments are not available on the NHS in the UK. [1]
All of this is put in front of the doctor as options to be evaluated according to skin tone, mark colour and age of the marks. We do not say that any specific device is available until it is confirmed when you book.
Stretch marks or loose skin? They are not the same problem
People often confuse the two. Stretch marks are streaks on the skin surface that change its colour and texture, whereas loose skin means extra, hanging skin that has not returned to its original size. Both are linked to damaged collagen and elastin, but the approach differs. [9]
Factors behind loose skin include how long someone lived with obesity, how much weight was lost, especially if quickly, age, genetics, sun exposure and smoking. [9] After small to moderate loss, skin often retracts on its own, but large loss may need lifting surgery or other medical procedures. [9] Radiofrequency and ultrasound carry fewer risks, but their results are less dramatic than surgery. [9]
On resistance training, the article we read says it may build muscle, which might improve how skin looks, but no research currently supports that. [9] Even so, keeping muscle while losing weight is sound for health reasons, and the details are in protecting muscle while losing weight.
If your main question is about sagging or stubborn local fat, the dedicated article is loose skin or localised fat, which explains the difference between the two situations and how decisions are made. Here we stay with stretch marks.
Prevention: gradual loss is the strongest thing in your hands
No single method is known to prevent them completely, [3] but the strongest prevention the NHS names is maintaining a healthy weight. [1] In weight loss, that means going steadily: the standard advice is to aim for 0.5 to 1 kg a week. [8]
That gives the skin time to adapt and eases the strain on its fibres. Since the studies link marks to the speed of change, [3] sudden loss is the factor you can actually control. If you have an event coming up and want to lose weight quickly, you can read the quick answers on fast weight loss before an event to understand the risks and the alternatives.
Practical steps:
1. Set a realistic rate of loss with the specialist instead of aiming for a number on the scale in two weeks. 2. Keep protein adequate and keep up resistance training so the loss comes from fat rather than muscle. 3. Drink enough water and moisturise the skin, which eases dryness and itching, but do not expect it to prevent the streaks. [7] 4. If you take a weight-loss medicine, keep follow-up with your doctor and report any very fast change in weight. 5. Photograph the skin every month or two, so that if new red lines appear you can start an assessment early, because the earlier treatment starts the better. [3]
Creams and oils can feel comforting, but the evidence that they prevent marks is limited. [2, 7]
Pregnancy and breastfeeding: cautions before any treatment
If you are pregnant or planning a pregnancy, retinoid creams such as tretinoin are not suitable, and the NHS states that retinoid creams should not be used during pregnancy. [1] That makes the first step before any cream to confirm with your doctor whether pregnancy is possible. This is not scaremongering, it is a well-known safety limit.
Stretch marks in pregnancy are also very common. The NHS says they are not harmful, that they may fade to paler scars but probably will not disappear completely, and that the evidence for preventing them with creams and oils is limited. [2] It also advises against eating less during pregnancy in an attempt to avoid them. [2]
In practice, the period after delivery and breastfeeding is the sensible time to assess procedures, because the body settles and the decision becomes clearer. For a closely related topic, there is an explanation in mesotherapy after pregnancy, which shows what is discussed after pregnancy and how the body is assessed.
Any procedure involving needles, laser or heat is postponed during pregnancy unless the doctor decides otherwise, and this is not the place for blanket rules covering every case.
When to see a doctor, and what happens at the visit
Stretch marks themselves are minor, but some situations need a doctor. Large or widespread marks that you want treated are reason enough for a visit. [3] There is also a condition called Cushing's syndrome, whose signs include stretch marks on the tummy, hips, breasts and under the arms, easy bruising and a red, round face, and the redness can be harder to see on brown or black skin. [10]
The NHS advises seeing a doctor if large marks come with extra fat on the chest and tummy but slim arms and legs, fat on the back of the neck and shoulders, or a red, puffy, rounded face. [1] If you take steroid medicine and develop symptoms like these, speak to your doctor. [10]
At the visit, the doctor looks at the colour, age and location of the marks and your skin tone, and asks about your weight history and how fast it changed, your medicines, and any recent or planned pregnancy and breastfeeding. Then the options are explained, with what to expect from each, what should wait, and whether any tests are needed. Photographs help you compare over time.
Bring older photos if you have them, the names of any creams you use, and any weight-loss medicine you are following.
Skin assessment after weight loss at La Rose Clinics
The assessment is done by the weight-management team, led by Dr Shimaa Fouad, a medical doctor and specialist in therapeutic and clinical nutrition and weight management, and an ESPEN member. The first branch is in New Maadi: 14 El-Mokhtar St, off El-Nasr St, behind QNB Bank, where Dr Shimaa sees patients on Saturday, Monday and Tuesday from 3 to 8 pm. The second is in Fifth Settlement: CMC Medical Mall, 4th floor, North 90th Street, behind the Air Force Specialized Hospital, on Wednesday from 3:30 to 8 pm.
You can come while you are still losing weight, because following weight and skin together lets the doctor adjust the pace before new marks form. Early assessment allows the clinician to identify the most suitable treatment according to the age and colour of the marks for optimal results [3]. If sagging is on your mind, you can also read about the difference in loose skin or localised fat.
Schedules can change and are confirmed when booking. To reserve, call or send a WhatsApp message to 010 4066 1893, and for any question about cost, message the same number. You can also book directly through Book at the Maadi branch.
