
Sunscreens protect your skin from harmful UV rays, but not all formulas are risk-free. Some potential side effects include stimulation, breakouts, allergic reactions, and even worsening hyperpigmentation.
Sunscreens are an essential item in any skincare routine and can help protect your skin from harmful UV rays, immature aging, and even skin cancer. But while most of us slap it without thinking again, not all sunscreens are safe for you. Some prescriptions can cause unexpected side effects beyond simple rashes, from skin irritation and breakouts to allergic reactions and even affecting vitamin D absorption. Knowing what to pay attention to can help you choose the safest option for your skin type and avoid the side effects of hidden sunscreen.
What are the hidden side effects of sunscreen?
Sunscreens are generally safe, but according to hairdresser Dr. Mahnaz Jahan Begum, some of the side effects that are often noticed include:
1. Skin irritation
Some sunscreens, especially those with chemicals or scents, can cause redness, stinging, or itching. People with sensitive skin may notice these reactions immediately after application. My skin feels uncomfortable.
2. Allergic reactions
Certain ingredients in everyday sunscreens, such as oxybenzone and preservatives, can cause rashes, hives, or swelling in sensitive individuals. Even slight exposures can cause significant discomfort, and sometimes you need to switch to hypoallergenic options.
3. Acne breakout
Thick, greasy or oil-based sunscreens can clog pores and lead to acne and acne. This is especially common in skin types that are oily or prone to acne.

4. Eye stimulation
If sunscreen accidentally gets into your eyes, it can cause burning, redness, or excessive watering. It is best to apply carefully around the eyes and use a formula designed for sensitive areas.
5. Photo-increasing sensation
In rare cases, certain sunscreen chemicals can be more responsive to sunlight rather than protecting the skin. This can lead to redness, rashes, or sunburn despite proper application.
6. It can worsen pigmentation
Some sunscreens can unintentionally exacerbate dark spots and melasma. Ingredients such as scent and alcohol can irritate melanin-rich skin and cause more pigmentation. It is recommended to choose sunscreen without irritants and add iron oxide. This provides extra protection against visible light.
To protect your skin, don’t make these sunscreen mistakes!
Can sunscreen cause vitamin D deficiency?
Sunscreen blocks UVB rays. This is necessary for the skin to naturally produce vitamin D. Although the use of sunscreen can lead to vitamin D deficiency, studies have not provided a clear link between normal sunscreen use and lower vitamin D levels, according to tissues in skin cancer. In fact, people who wear sunscreen every day can maintain healthy vitamin D levels. To support vitamin D, you can:
- Spend a few minutes outdoors safely without sunscreen (based on skin type)
- Eat vitamin D-rich foods such as salmon, fortified milk, and eggs
- Consider vitamin D supplements if your doctor recommends
Which sunscreen materials should you pay attention to?
Dr. Mahnaz recommends checking sunscreen labels for these potentially problematic ingredients.
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- Oxybenzone: Related to allergic reactions and environmental concerns
- Fragrance: Can cause irritation and allergies, especially in sensitive skin
- Parabens and preservatives: Sometimes related to skin sensitivity
Instead, look for mineral-based sunscreens with zinc oxide or titanium dioxide.
