Stretch marks on the buttocks are one of the most common places to get them, and in most cases they simply mean your skin stretched faster than it could adapt. The buttocks are especially prone because the skin there sits over large muscles and fat deposits that can change size quickly during puberty, weight fluctuations, or muscle growth. For the vast majority of people, these marks are a cosmetic concern and not a sign of any underlying health problem.
Why the Buttocks Are a Common Location
Stretch marks form when skin stretches or shrinks rapidly enough to rupture collagen and elastin, the two proteins that give skin its structure and bounce. When those fibers break, the skin essentially scars from the inside, leaving the visible lines you see on the surface. The buttocks are one of the body’s primary fat storage areas and sit directly over the gluteal muscles, which means any change in body composition tends to show up there first.
Your genetics play a surprisingly large role in whether you develop stretch marks at all. One study found no association between the degree of skin stretching during pregnancy and the number of stretch marks that developed, suggesting that inherited differences in skin structure matter more than the stretching itself. Family history of stretch marks, personal history, and race may actually be better predictors than weight gain alone. If your parents have stretch marks, you’re more likely to get them regardless of how much your body changes.
The Most Common Causes
Puberty is the single most frequent trigger for buttock stretch marks. During the adolescent growth spurt, the body adds height, muscle, and fat distribution changes faster than the skin can keep up. Reported prevalence in adolescents ranges from 6% to 86% depending on the population studied. In adolescent males, the buttocks, lower back, and knees are the areas most often affected. In adolescent females, the buttocks, thighs, and calves tend to be involved. These marks typically appear in healthy, non-obese individuals and are considered a normal part of development.
Rapid weight gain or loss is another frequent cause. When fat accumulates in the gluteal area quickly, the skin stretches beyond its elastic capacity. The reverse can also contribute: losing weight rapidly can change skin tension in ways that make existing micro-damage visible.
Weight training is a less obvious but increasingly common trigger. Building the gluteal muscles through exercises like squats and hip thrusts can increase muscle volume fast enough to tear dermal fibers. This is especially likely during the first year of serious training, when muscle growth tends to be fastest.
Pregnancy causes stretch marks on the buttocks (not just the abdomen) because hormonal shifts raise cortisol levels. Cortisol, produced by the adrenal glands, weakens the elastic fibers in skin throughout the body, making all skin more vulnerable to tearing even in areas that aren’t directly stretching around a growing belly.
When Stretch Marks Could Signal Something Else
In rare cases, stretch marks point to a medical condition worth investigating. The key distinction is appearance. Stretch marks caused by normal life events like puberty, weight changes, or exercise tend to be narrow and pale or pink. Stretch marks associated with excess cortisol production (a condition called Cushing’s syndrome) are typically wide and purple. If you notice unusually broad, deeply pigmented marks appearing without an obvious trigger like recent weight change or growth, that pattern is worth mentioning to a doctor.
Connective tissue disorders like Marfan syndrome can also cause stretch marks, but they tend to show up in unusual locations. A study comparing patients with Marfan syndrome to control subjects found that stretch marks in atypical sites (places other than the buttocks, hips, or thighs) were present in 66% of patients versus only 16% of controls. In other words, stretch marks on the buttocks are so common in the general population that they’re actually considered a “typical” location and are less useful as a diagnostic clue for connective tissue problems. Marks appearing in unexpected places, like the upper back or forearms, are more diagnostically meaningful.
How Stretch Marks Change Over Time
Stretch marks go through two distinct visual stages. Early stretch marks, sometimes called striae rubra, appear reddish or purple. The skin in these areas has a measurably higher redness index than surrounding normal skin. Over months to years, the marks transition to striae alba, a later stage where they become pale, silvery, or white. At this point the marks are essentially flat scars with less pigment than the surrounding skin. This fading is a normal progression, not a sign that anything is getting worse or better medically.
Most stretch marks on the buttocks fade significantly on their own within one to two years of appearing, though they rarely disappear completely. The final appearance depends heavily on your skin tone, genetics, and how much the skin was stretched.
What Actually Works for Treatment
No topical product has been proven to prevent stretch marks. A Cochrane review examining creams and oils containing ingredients like vitamin E, hyaluronic acid, cocoa butter, and olive oil found no statistically significant difference in stretch mark development between women who used these products and those who used a placebo or nothing at all.
For marks that have already formed, the timing of treatment matters. Early-stage red or purple marks respond better to intervention than older white ones. However, even promising treatments have limitations. One clinical study found that topical tretinoin (a prescription retinoid) produced minimal improvement, with 80% of patients showing poor results after a full year of use.
Laser treatments offer moderate improvement. Fractional laser therapy, which creates tiny controlled injuries in the skin to stimulate collagen remodeling, typically requires three to eight sessions spaced about four weeks apart. Results vary widely: one case series using ablative laser showed that about 51% of patients achieved 50% to 75% improvement, while roughly 7% saw 75% to 100% improvement. Another series using a different laser type reported only 1% to 24% improvement after four monthly sessions. These are reductions in appearance, not complete removal.
For most people with stretch marks on the buttocks, the marks are a permanent feature that fades with time. They don’t affect skin function, don’t cause health problems, and are one of the most common skin changes the human body goes through.