If you’ve lived in Florida for any time at all, then you know sun protection is a year-round necessity. With UV index readings that routinely top the charts and outdoor living as a part of our lifestyle, our skin faces a level of sun exposure that many living outside of the Sunshine State simply don’t have. That’s why, as a dermatology practice rooted in this community, we want to let you in on something that doesn’t come up nearly enough: the products sitting on your bathroom shelf right now may actually be making your skin more vulnerable to the Florida sun.
We’re not here to scare you away from your favorite serums and retinol creams. In fact, many of the ingredients we’re about to discuss are ones we genuinely recommend to patients for their skin-improving benefits. But, when you’re living under the kind of relentless sunshine we get across Central Florida, understanding how your skin care routine interacts with UV exposure is definitely necessary.
What Is Photosensitivity, and Why Should You Care?
Photosensitivity happens when your skin becomes unusually reactive to ultraviolet (UV) radiation. This can show up as redness, a burning sensation, rashes, or worsening pigmentation issues, sometimes after only brief time outdoors. There are two types of photosensitivity reactions: phototoxic and photoallergic.
Phototoxic reactions are the most common and happen when a medication of skin care ingredient, orally or applied to the skin, gets activated by UV light and causes what looks and feels like a sunburn or rash. It can show up within minutes or take a few hours and typically affects the skin that was exposed to the sun.
A photoallergic reaction is much rarer. Your immune system detects changes caused by sun exposure interacting with a medication or topical product and flags it as a threat. The result can range from a rash or red bumps to blisters or oozing lesions, and unlike a phototoxic reaction, it typically doesn’t show up until one to three days after sun exposure.
Photosensitivity can increase your risk of skin damage from the sun and potentially increase your risk of developing skin cancer.
The Ingredients Most Likely to Increase Your Sun Sensitivity
Retinoids (Retinol, Tretinoin, Adapalene)
Retinoids speed up cell turnover, stimulate collagen production, soften fine lines, and help fade dark spots. Prescription-strength tretinoin and over-the-counter retinol are among the most well-studied and effective ingredients in dermatology.
Here’s the catch, though – retinoids work by thinning the outermost layer of the skin and accelerating the shedding of older cells to reveal newer ones beneath. That fresh, new skin is more delicate and more susceptible to UV damage. Additionally, retinoids can degrade when exposed to sunlight, meaning they become less effective and leave your skin in a more vulnerable state if you step outside without proper protection. The takeaway isn’t to stop using retinoids, it’s to use them strategically, typically at night, and to be sure to use broad-spectrum SPF 30 or higher every single morning.
Alpha Hydroxy Acids (AHAs): Glycolic Acid, Lactic Acid, Mandelic Acid
AHAs are chemical exfoliants derived from natural sources like sugarcane (glycolic) and milk (lactic). They dissolve the bonds between dead skin cells, allowing them to slough off and reveal the brighter, smoother skin underneath. Patients love them for their ability to improve skin texture, reduce the appearance of sun spots, and give skin a more luminous glow.
But that exfoliation has a flip side: by removing the protective top layer of dead skin cells, AHAs expose newer, more sensitive skin to environmental stressors, including UV rays. Research has consistently shown that regular AHA use can increase the skin’s susceptibility to sunburn. If you’re using a glycolic acid toner or a lactic acid serum, it is absolutely essential that you follow up with sunscreen use during the day. Many dermatologists recommend reserving AHA use for your evening routine specifically to minimize daytime UV exposure on freshly exfoliated skin.
Beta Hydroxy Acids (BHAs): Salicylic Acid
Unlike AHAs, BHAs are oil-soluble, which allows them to penetrate into pores and clear out the debris, excess oil, and bacteria that contribute to breakouts. We recommend salicylic acid products regularly to patients dealing with acne, congestion, and oily skin.
The evidence around salicylic acid and photosensitivity is somewhat mixed. Some studies suggest it may even have a mild protective effect, while others indicate increased sun reactivity. Our advice? Apply salicylic acid-containing products in the evening, and always, always wear sunscreen during the day. This is especially true in Florida, where you’re likely to encounter UV exposure just walking to your car.
Hydroquinone and Brightening Agents
Hydroquinone is a skin-lightening ingredient often prescribed for hyperpigmentation, melasma, and post-inflammatory dark spots. It works by reducing the production of melanin in the skin. Here’s the irony: melanin is also your skin’s natural built-in defense against UV rays. By decreasing melanin levels, hydroquinone can lower your skin’s inherent sun protection, making diligent sunscreen use not just recommended, but non-negotiable while using this product.
Other brightening ingredients, including certain vitamin C formulations at high concentrations, can also increase UV reactivity in some skin types. If you’re on a brightening regimen, talk with our team about how to protect and preserve your skin from the sun.
Benzoyl Peroxide
A staple in acne treatment, benzoyl peroxide works by releasing oxygen into the pores and killing the bacteria responsible for breakouts. It can cause dryness and some thinning of the outer skin layer with regular use, which may increase your skin’s sensitivity to sun exposure. If you’re using benzoyl peroxide in your morning routine, consider shifting it to the evening and following up with a gentle, non-comedogenic moisturizer and SPF during the day.
Certain Essential Oils
Some skin care products contain essential oils, particularly citrus-based ones like bergamot, lemon, and lime that can be photosensitizing. These are phototoxic ingredients and can trigger a pronounced skin reaction when exposed to UV light. If your skin care line leans heavily into natural or plant-based ingredients, take a close look at the label for these oils and exercise caution with daytime use.
Prescription Skin Care and Medications
It’s not only over-the-counter products that can increase your sun sensitivity. Certain prescription topicals including antibiotic creams and some antifungal treatments can have a similar effect. Oral medications are another important consideration: antibiotics like doxycycline (commonly prescribed for acne), certain blood pressure medications, diuretics, and some antidepressants are known to increase photosensitivity significantly. If you’ve recently started a new medication and notice your skin is reacting unusually to sun exposure, let us know. We can help you identify the cause and adjust your skin care and sun protection strategy accordingly.
How to Protect Your Skin Without Giving Up Your Routine
The goal isn’t to overhaul your entire skin care regimen, it’s to make sure your routine is working with your skin, not against it. Here’s how to do that, especially in our climate:
- Shift sun-sensitizing ingredients to your evening routine. Retinoids, AHAs, BHAs, and benzoyl peroxide are all better suited for nighttime use. Your skin does most of its repair and renewal while you sleep, and using these actives at night also removes the risk of sun exposure immediately after application.
- Wear broad-spectrum SPF 30 or higher every single day, without exception. Not just at the beach. Not just on vacation. Every day, including overcast days, during your morning commute, and while running errands. Look for a broad-spectrum formula that protects against both UVA and UVB rays. Reapply every two hours if you’re spending extended time outdoors, swimming, or sweating.
- Layer your protection. Sunscreen alone is a great start but pairing it with physical barriers like a wide-brimmed hat, UV-protective clothing, and sunglasses takes your defense to the next level. Seek shade between 10 a.m. and 4 p.m., when UV radiation is most intense.
- Read your product labels. Many skin care products that contain photosensitizing ingredients will include a “sunburn alert” or other language on the packaging that lets you know the product may increase sun sensitivity.
When in doubt, ask your dermatologist. This is perhaps the most important tip of all. If you’re unsure whether your current skin care routine is increasing your sun sensitivity or if you’ve noticed unusual redness, rapid burning, or new pigmentation changes, schedule a visit with us. A personalized skin assessment allows us to evaluate your regimen, your skin type, and your lifestyle to give you guidance that’s specific to you.
Your Skin Deserves a Strategy
There’s a lot of great skin care out there. And the ingredients driving results in those products are genuinely impressive. But using powerful ingredients without an equally powerful sun protection plan is a little like investing in a top-of-the-line security system and then leaving the front door open.
The combination of using smart active ingredients with consistent, comprehensive sun protection is where the real magic happens. Our team is here to help you build a strategy that combines clearer, brighter, healthier skin with a smart and sun safe skin care routine.
If you have questions about your current skin care routine or want to schedule a skin evaluation, contact us today!
About Us
FLDSCC’s team of providers are experts in diagnosing and treating skin cancers; skin conditions and diseases such as eczema, rosacea, dry skin, rashes, and warts; and chronic skin diseases and infections, while simultaneously tackling aging skin, wound care, and a multitude of other skin, hair, and nail concerns.
Several FLDSCC providers are fellowship-trained in Mohs micrographic surgery, an effective state-of-the-art treatment for most types of skin cancers. Mohs surgery involves minimal discomfort and encourages the greatest preservation of healthy tissue, which means less risk of scarring and superior cosmetic results.
FLDSCC has many convenient locations throughout the state. For more information, visit www.fldscc.com, or call (855) FLD-SKIN.
