BB creams and their photoprotective effect
Céline Couteau1, Eva Paparis1, Laurence J M Coiffard1
1a Faculty of Pharmacy , Université de Nantes, Nantes Atlantique Universités, Faculty of Pharmacy , Nantes , France.
Pharmaceutical Development and Technology
|October 1, 2014
Summary
Many BB creams offer sun protection, but testing reveals significant discrepancies. While 70% match labeled SPF, 30% have much lower sun protection factor (SPF) values, and photostability varies widely.
Area of Science:
- Cosmetic Science
- Dermatology
- Photoprotection
Background:
- BB creams are popular cosmetic products offering complexion enhancement and photoprotection.
- The labeled Sun Protection Factor (SPF) is a key indicator of efficacy.
- Photostability is crucial for sustained protection after UV exposure.
Purpose of the Study:
- To evaluate the in vitro SPF efficacy of commercially available BB creams.
- To assess the photostability of BB creams after UV irradiation.
- To compare in vitro SPF values with labeled SPF claims.
Main Methods:
- In vitro determination of SPF for 21 BB cream products.
- Assessment of SPF reduction after standardized UV irradiation.
- Comparison of measured SPF values against product labeling.
Main Results:
- 70% of tested BB creams exhibited an in vitro SPF consistent with their labeled values.
- 30% of products showed significantly lower SPF values, ranging from 2 to 10 times below the claimed SPF.
- Photostability varied greatly, with some products losing only 5% efficacy while others lost up to 60% after UV exposure.
Conclusions:
- A significant portion of BB creams do not meet their labeled SPF claims.
- Inconsistent photostability raises concerns about the reliability of UV protection provided by some BB creams.
- Consumers should be aware of potential underestimation of sun protection from certain BB cream products.
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