How to Avoid Sunburn Boosters

Before you hit the beach this weekend, a warning for sun lovers: Everyday products and foods may be increasing your sensitivity to the sun's damaging rays.

CBS News Medical Correspondent Dr. Jennifer Ashton explained some people are more sensitive to the sun's rays than other people. She said subtle symptoms will appear if you could be more sensitive to the sun than other people.

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"It really is a reaction that is out of proportion to the sun exposure that you've had," she said. "For example, if you're out in the sun for 10 minutes and you come in and into the next day or so because it can take 4 hours for these to manifest, you're very red. You're itchy. You have some little bumps and you've only been out 10 minutes that can be a sign."

However, there are some products and foods that could make anyone more sensitive to the sun.

Ashton said these medications can impact your reaction to the sun's rays:
• Pain Relievers: Non-steroidal antiinflammatory drugs, such as ibuprofen, Motrin
• Antihistamines: Drugs that contain diphenhydramine, such as Benadryl
• Antibiotics: For example, Cipro
• Diuretics
• Some antidepressants: Tricyclics and herbal treatments like St. John's wort

Certain foods can also affect sun sensitivity. If you plan on going out in a lot of sun, Ashton said you might not want to snack on celery, or include herbs like dill, parsley or fennel in your summer salads.

Ashton said you should also stay away from lime juice because it may cause temporary discoloration of any part of you that comes into contact with the juice.

"So, maybe forgo the lime garnish -- or be careful -- with summer cocktails like margaritas," she said.

Skin care products can also affect sun sensitivity. Cosmetic treatments, such as microdermabrasion and chemical peels, she said, can make your skin more sensitive to the sun. Everyday beauty products, too, can affect your sensitivity. Ashton said users should be careful of sun exposure when using acne medications such as Accutane. Also, skin care products that contain alpha-hydroxy acids (AHAs), which are used in anti-aging creams, can also make your skin more sensitive, along with salicylic acids and retinoids.

Ashton suggests using a broad-spectrum sunscreen with an SPF of at least 30. For photosensitive people, the higher the SPF, the better. Reapply every two hours and make sure you put on enough! And try to avoid direct sunlight during the most intense hours -- generally between 10 a.m. and 4 p.m.

Ashton recommended you always consult with your doctor or pharmacist if you have concerns about sun sensitivity.