How to Treat and Prevent Stretch Marks During Pregnancy: A Complete Guide

Pregnancy is a beautiful journey, but it often comes with changes to your body that can be challenging. One of the most common concerns for expectant mothers is the appearance of stretch marks. These indented streaks on the skin, often appearing on the belly, breasts, thighs, and hips, affect up to 90% of pregnant women. While they are a natural part of the process, many moms-to-be want to minimize their appearance or prevent them from forming in the first place.

The good news is that with the right skincare routine and a few lifestyle adjustments, you can significantly reduce your risk of developing stretch marks and keep your skin feeling comfortable and nourished throughout your pregnancy. In this guide, we'll explore what causes stretch marks, how to prevent them, and the best products to support your maternity skincare journey.

What Causes Stretch Marks During Pregnancy?

Stretch marks, medically known as striae gravidarum, occur when your skin stretches rapidly due to weight gain and hormonal changes. During pregnancy, your body produces higher levels of cortisol, a hormone that can weaken the elasticity of your skin's collagen and elastin fibers. As your belly expands to accommodate your growing baby, the dermis—the middle layer of your skin—can tear, leading to those familiar red, purple, or white lines.

Genetics play a significant role in whether you'll develop stretch marks. If your mother or sisters had them, you may be more prone. However, lifestyle factors such as hydration, nutrition, and consistent skincare can make a real difference. Keeping your skin well-moisturized and elastic can help it stretch more easily without tearing.

• Rapid weight gain during the second and third trimesters increases the risk.
• Hormonal changes reduce collagen production, making skin more vulnerable.
• Dry skin is more prone to tearing, so hydration is key.

When to Start Preventing Stretch Marks

The best time to start a prevention routine is early in your pregnancy, ideally during the first trimester. Stretch marks typically appear around the 24th week, when your belly starts to grow more noticeably. By beginning a daily moisturizing routine before your skin begins to stretch, you can build a strong foundation of elasticity.

Consistency is more important than the specific product you use. Applying a nourishing oil or balm twice daily—especially after a shower when your skin is slightly damp—helps lock in moisture. Focus on areas most prone to stretching: your belly, breasts, hips, lower back, and thighs. Don't forget your arms and buttocks, as these areas can also be affected.

• Start your routine in the first trimester for best results.
• Apply products morning and night for consistent hydration.
• Massage gently in circular motions to stimulate circulation.

Key Ingredients to Look for in Stretch Mark Products

Not all moisturizers are created equal when it comes to preventing stretch marks. Look for products that contain ingredients known to boost collagen production, improve skin elasticity, and deeply hydrate. Avocado oil is a star ingredient—it's rich in fatty acids and vitamins A, D, and E, which help nourish and repair the skin. Mustela's Multi-purpose balm with 3 avocado extracts harnesses the power of this fruit to soothe and protect stretched skin.

Other beneficial ingredients include shea butter, which provides intense moisture, and vitamin E, a powerful antioxidant that supports skin healing. Aloe vera and olive oil are also excellent for calming inflammation and keeping skin supple. Avoid products with harsh fragrances or alcohol, which can dry out your skin and worsen irritation.

• Avocado oil and shea butter for deep hydration and repair.
• Vitamin E to protect and heal skin cells.
• Aloe vera and olive oil for soothing and moisturizing.

Daily Skincare Routine for Stretch Mark Prevention

A simple, consistent routine can make a world of difference. Start your day by applying a lightweight moisturizer or oil to clean, damp skin. This helps seal in moisture and keeps your skin feeling comfortable throughout the day. In the evening, after your shower, use a richer balm or oil to provide overnight nourishment. Massaging the product into your skin not only improves absorption but also boosts blood flow, which can help maintain elasticity.

Mustela's Stretch marks oil is specifically formulated for pregnancy and contains natural ingredients like avocado oil and sunflower oil to keep skin supple. For an extra layer of hydration, you can also use a gentle, fragrance-free body lotion. Remember, your skin is more sensitive during pregnancy, so always patch-test new products and consult your healthcare provider if you have concerns.

• Apply moisturizer immediately after bathing for better absorption.
• Use gentle, circular motions when massaging to avoid irritation.
• Layer a balm over oil for intense hydration on very dry areas.

Lifestyle Tips to Support Your Skincare Routine

While topical products are essential, your overall health also affects your skin's ability to stretch without damage. Staying well-hydrated by drinking plenty of water helps keep your skin cells plump and resilient. Eating a balanced diet rich in vitamins C and E, zinc, and omega-3 fatty acids supports collagen production and skin repair. Foods like citrus fruits, nuts, seeds, and leafy greens are excellent choices.

Gradual weight gain is another important factor. Aim for a steady, healthy weight gain as recommended by your healthcare provider—typically 25-35 pounds for a normal-weight woman. Rapid weight gain can increase the likelihood of stretch marks. Gentle exercise, such as prenatal yoga or walking, can also improve circulation and skin health.

• Drink at least 8-10 glasses of water daily.
• Include vitamin C-rich foods like oranges and bell peppers in your diet.
• Avoid crash diets or sudden weight fluctuations.

Treating Existing Stretch Marks During and After Pregnancy

If you already have stretch marks, don't worry—there are still ways to reduce their appearance. During pregnancy, focus on keeping the skin moisturized to prevent further tearing and to soothe any itching or discomfort. Products like Mustela's Organic nursing comfort balm can be used on the belly and breasts to provide gentle, nourishing care. After pregnancy, many women find that stretch marks fade over time, becoming less noticeable as the skin heals.

For postpartum treatment, continue using moisturizing oils and balms to support skin recovery. Some ingredients, like hyaluronic acid and retinoids, are effective but may not be safe during pregnancy or breastfeeding—always check with your doctor. Gentle exfoliation can also help improve skin texture, but avoid harsh scrubs that can irritate sensitive skin.

• Continue moisturizing postpartum to support skin healing.
• Be patient—stretch marks often fade to a silvery white over time.
• Consult a dermatologist for advanced treatments like laser therapy if desired.

Preventing stretch marks during pregnancy is all about consistency, hydration, and choosing the right products. By starting early and using nourishing ingredients like avocado oil and shea butter, you can help your skin stretch more comfortably and reduce the appearance of marks. Explore Mustela's dedicated maternity range, including the Stretch marks oil, to support your skin through every stage of your pregnancy journey.