Can Mineral Sunscreen Cause Acne? Debunking the Myths
Introduction: Mineral sunscreens and acne
Sunscreen is an essential part of any skincare routine, offering protection against harmful UV rays and preventing premature aging and skin damage. However, there has been some debate about whether mineral sunscreen, specifically, can cause acne. In this blog post, we will explore the facts and debunk the myths surrounding this topic. As experts in the field with a resident dermatologist on our research and development team, we’re all about sharing the best available evidence to help you make informed decisions about your skincare. We formulate mineral sunscreens that prioritize UVA protection while giving beautiful textures and aesthetics. No greasy goop that makes you break out.
Understanding Mineral Sunscreen:
Mineral sunscreens are formulated with active ingredients zinc oxide and titanium dioxide. The popular myth is that these minerals work by sitting on top of the skin's surface, creating a physical barrier that reflects and scatters the sun's rays. However, it’s well established that mineral sunscreens work via light reflection and scattering for about 5% of their mode of action. Their remaining mode of action is similar to ‘chemical’ sunscreens that they convert UV light to heat by absorption. Importantly though, there is robust evidence to show that they do their light reflectance and scattering in the long wave UVA portion of light and extending into blue light and visible light (and infrared or heat for titanium dioxide). This explains why they both provide excellent blue light protection, similarly to other minerals like iron oxides.
Unlike most ‘chemical’ organic filters, mineral filters are huge in size, even nano sized ones. The chart below shows the different sizes of UV Filters in both molecular mass and particle size. Mineral filters are huge! For this reason, they do no penetrate through the dead layer of skin thus meaning there is no concern in their ability to influence human hormones negatively (otherwise known as endocrine disruption). We currently only formulate with mineral filters, specifically zinc oxide in high concentrations of 20-25% because of their excellent UVA protection. They are generally considered to be gentler and less likely to cause skin irritation by most users and physicians. Dermatologists will often recommend people with ‘sensitive’ skin to use mineral sunscreens but everyone can and should enjoy the safety, efficacy and aesthetics of them.
Comparison of size and weight of different UV Filters like zinc oxide versus octinoxate
The Link Between Mineral Sunscreen and Acne:
There is a common misconception that mineral sunscreen can cause acne breakouts. However, it's important to note that acne is a complex skin condition influenced by various factors, including genetics, age, hormones, and lifestyle. While some individuals may experience breakouts when using mineral sunscreen, it is not necessarily the direct cause. Let's explore some of the reasons why this misconception exists.
Pore Clogging: One concern regarding mineral sunscreens is that they can potentially clog pores, leading to acne breakouts. However, this was more likely related to the previously occlusive bases these ingredients were formulated in as opposed to the UV filters themselves. Formulations have come a long way and can have many different types of emollients, oils and film formers.
Inactive Ingredients: It's worth mentioning that the inactive ingredients present in sunscreen formulations can also contribute to acne breakouts. Certain emollients, oils, or fragrances used in sunscreen products might be comedogenic (pore-clogging) for some individuals. However, the label comedogenic relies on an outdated test that does not adequately represent whether a product might exacerbate acne. Many people have to simply try a product to see if it affects their skin.
Individual Sensitivities: Everyone's skin is unique, and what works well for one person may not work for another. Some individuals may have a sensitivity or allergy to specific sunscreen ingredients. It should be noted that many conventional chemical organic UV Filters are listed as allergens or photo-allergens by contact dermatologists as top offenders. In such cases, it is crucial to identify the specific ingredient causing the reaction and opt for alternative formulations that suit your skin.
Rosacea: many people think they have typical acne when in fact they might have rosacea. Rosacea works via a different skin pathology and is treated differently than other types of acne. Mineral sunscreens are the preferred sunscreen for rosaceous skin due to their calming effects, similar to how zinc oxide is still used in diaper creams for infants.
Tips for Using Mineral Sunscreen Without Aggravating Acne:
If you have acne-prone skin and want to use mineral sunscreen without exacerbating breakouts, here are some tips to consider:
Choose Lighter Formulations: Opt for lightweight mineral sunscreens that are less likely to feel heavy or greasy on the skin.
Proper Cleansing: Ensure you cleanse your face thoroughly at the end of the day to remove sunscreen residue, dirt, and excess oil, which can contribute to breakouts.
Consult a Dermatologist: If you continue to experience persistent acne breakouts despite using mineral sunscreen, it is advisable to consult a dermatologist who can provide personalized recommendations and address your specific concerns.
Best Mineral Sunscreens For Those Who Are Acne Prone:
Best mineral sunscreen for oily/combination skin: Ava Isa Sun-e-Serum Drops SPF 35
Best mineral sunscreen for rosacea: Ava Isa Every Morning SPF 30
Best mineral sunscreen for hormonal acne: Cyberderm Simply Zinc Ultra SPF 50
Conclusion:
Mineral sunscreen, when chosen and used appropriately, is unlikely to be the direct cause of acne breakouts. In fact, the calming nature of mineral filters can actual be beneficial for the restoration of the skin barrier and help indirectly reduce acne. Acne is a complex skin condition influenced by multiple factors, and it's essential to consider individual sensitivities and other skincare products used in conjunction with sunscreen. Remember, consulting a dermatologist is always a wise choice if you have persistent skin concerns.