Does homemade sunscreen work? Dermatologists' opinion on the trend

The general trend toward all-natural health and wellness products isn't necessarily good or bad. While ingredients, environmental impact, and cost are important, safety and effectiveness should still be top priorities. Among the many current trends in favor of natural products is homemade sunscreen, but doctors warn that there is no true DIY sunscreen formula that provides adequate UV protection. Keep scrolling to learn more about the effectiveness of homemade sunscreens and how you may be increasing your risk of sun damage.

The importance of properly formulated broad-spectrum sunscreens

SPF is crucial for both cosmetic and health reasons. Sunscreens protect your skin from ultraviolet (UV) radiation by blocking it. They can also help reduce the risk of skin cancer, sunburn and hyperpigmentation, as well as improve your skin texture, slow the formation of wrinkles and help your skin maintain its elasticity.

As we age, it becomes more difficult for the skin to regenerate itself, notes the National Institutes of Health. Over time, UV damage can damage your skin and the underlying connective tissue, which can cause your skin to develop more wrinkles and lines. Excessive and prolonged sun exposure can also increase your risk of skin cancer. Applying sunscreen is an important factor in maintaining health, regardless of your skin type.

Does homemade sunscreen work?

“One of the biggest misconceptions is that natural ingredients like oils or butter can provide sufficient sun protection,” says Hannah Kopelman, DODermatologist at Kopelman Hair Restoration. “I often hear of people using ingredients like coconut oil, shea butter, or even essential oils in their homemade sunscreens. While these ingredients may be helpful in moisturizing the skin or creating a pleasant scent, they are far from effective when it comes to blocking UV rays.”

Coconut oil, for example, has an SPF of about one in eight, which is far from enough to protect against the sun's harmful effects, explains Dr. Kopelman. Dermatologists typically recommend using a sunscreen with an SPF of 30 or higher for daily use.

Ultimately, the biggest problem with homemade sunscreens is that they aren't tested and formulated as rigorously as commercial sunscreens, explains Dr. Kopelman. This quality assurance is necessary because sunscreens aren't just about ingredients with a certain SPF, but a precise combination of ingredients in specific ratios that work together to provide broad-spectrum protection that covers both UVA and UVB rays, she says.

Another common ingredient in many homemade sunscreens is zinc oxide. This is an ideal mineral sunscreen ingredient, says Rosanne Paul, DO Assistant professor of dermatology at Case Western Reserve University. However, she says the concentration differs when it is mixed with other substances outside of a scientific research setting, reducing its effectiveness.

Which sunscreen is safest?

The intention behind making homemade sunscreen is to avoid potentially harmful chemicals or side effects. While doctors say this is a valid point, there are safe and effective commercial sunscreens available.

Read the ingredient lists on all packaging carefully and make sure you find the note “water resistant”. Association of the American Academy of DermatologyThis means the sunscreen will last 40 to 80 minutes on wet or sweaty skin before you need to reapply.

Additionally, Dr. Kopelman recommends looking for products labeled as mineral-based or reef-safe. These typically contain active ingredients like zinc oxide or titanium dioxide, which provide optimal broad-spectrum protection and are less likely to cause skin irritation, she explains. Additionally, these ingredients are often considered safer for the environment, especially for marine life.

Mineral sunscreens that are chemical-free are unlikely to cause systemic absorption of contaminants, says Dr. Paul. These products have been tested on skin and do not penetrate deeper than the top layer of skin, she says. Dr. Paul typically recommends Vanicream Products.

Read on to learn more about improving your skin health:

Tretinoin vs. Retinol: Which product works best for women over 50?

Neurocosmetics works with your brain to give you healthy skin: what you need to know

The simple 3-step post-beach skincare routine for women over 50 that leaves skin looking radiant and youthful

This content is not a substitute for professional medical advice or diagnosis. Always consult your doctor before embarking on any treatment plan.