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Benzophenone-4

Also-called-like-this: Sulisobenzone
What-it-does: sunscreen

Details

A water-soluble, chemical sunscreen agent that is a secondary UVB absorber with some activity in the short UVA range as well. Being a secondary UV absorber means that its protection is weak and it has to be combined with other sunscreen filters for proper sun protection. 

More often than not, Benzophenone-4 is not used as a sunscreen agent but as a photoprotectant to extend product shelf life, or as a color-protectant for products in clear packages. 

A Contact Dermatitis article from 2007 names BP-4 as an emerging allergen, as it was the most frequently positive chemical UV filter and third most frequently positive ingredient overall among the 35 substances patch tested in the study (13 positives of 1693 people tested).

Show me some proof

  • Hughes, T. Merion, and Natalie M. Stone. "Benzophenone 4: an emerging allergen in cosmetics and toiletries?." Contact dermatitis 56.3 (2007): 153-156.

Products with Benzophenone-4

Clean & Clear Essentials Deep Cleaning Astringent Derma Revive Natural Aloe Vera Gel Valjean Labs Restore Facial Serum Garnier Pure Active Anti-Blackhead Deep Pore Wash Doctor Babor Rose Toning Essence Lee Stafford Coco Loco Coconut Mousse Neutrogena Clear Pore Oil-Eliminating Astringent Valjean Labs Glow Facial Serum Anne moller Gel Limpiador Mario Badescu Facial Spray With Aloe, Cucumber And Green Tea SkinCeuticals Phyto Corrective SkinCeuticals Phyto Corrective Gel Superdrug Vitamin E Gentle Micellar Solution Clarins Daily Energizer Wake-Up Booster Eucerin Redness Relief Soothing Cleanser Faberlic Salon Care Hyaluron Active Plumping Shampoo Philosophy Time In A Bottle 100% In Control Mario Badescu Facial Spray With Aloe, Chamomile And Lavender Simple Spotless Skin Rapid Action Spot Zapper Diadermine Smooth Soothing Tonic Nivea Nivea Daily Essentials Refreshing Facial Wash Gel Proactive+ Revitalizing Toner Simple Water Boost Skin Quench Sleeping Cream TRESemmé Heat Defence Styling Spray OLEHENRIKSEN Truth Serum Simple Clear Skin Oil Balancing Moisturiser Simple Spotless Skin Anti-Blemish Moisturiser Biore Blue Agave Face Mask Simple Water Boost Hydrating Booster Simple Water Boost Hydrating Gel Cream Face Moisturizer Biore Charcoal Pore Minimizer Delectable Coconut & Cream Body Lotion MDNA Skin The Eye Serum Olay Anti-Wrinkle Firm & Lift 2In1 Cream + Serum Soap & Glory Call of Fruity Hand Food - Hydrating Hand Cream Biore Baking Soda Acne Scrub Biore Pore Unclogging Scrub Meishoku Ceracolla Perfect Gel Soap & Glory Vitamin C Face Soap And Clarity Superdrug Vitamin C Booster Serum Glossier Moisturizing Moon Mask Healthy Sexy Hair Tri-Wheat Leave In Conditioner Origins Modern Friction™ Cleansing Oil With Radiance-Boosting White & Purple Rice Superdrug Vitamin E Leave-On Moisture Mask Vitabath Pomegranate Bellini Blush Body Wash Sebamed Cleansing Bar Tony moly Timeless Ferment Snail Eye Mask Vitabath Cool Spearmint & Thyme Body Wash skyn ICELAND Nordic Skin Peel Marks & Spencers Formula Absolute Ultimate Sleep Cream