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A comprehensive long-term sunscreen use study in skin of color is lacking. Therefore, this study was designed to assess the benefits of sunscreen of SPF30/PPD 20 in Hispanic women of Fitzpatrick skin types IV and V over 12 months in comparison to a real-life observational group with subjects who did not use sunscreen regularly.
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The demographics of the United states are evolving with a large increase in racial and ethnic diversity driven by international migration of Hispanic, African, and Asian populations leading to a minority-majority shift in ~2050 towards persons of color (Fitzpatrick III, IV, V, and VI).1 Specifically, the Hispanic population is projected to be among the fastest growing population in the US, projected to increase from 55 million in 2014 to 119 million in 2060, a change of +115%.1
Subjects with skin of color are heterogeneous with multiple shades and tones and different reactions to intrinsic and extrinsic aging factors due to structural and physiologic differences.2,3 Skin of color individuals have fewer visible signs of aging (deep wrinkles, fine lines, rough surface texture, and sun spots).
However, darker skin tones are more susceptible to certain skin conditions including post-inflammatory hyperpigmentation (may occur after acne, eczema, injury, laceration, melasma, post-inflammatory hypopigmentation, pityriasis alba (round, light patches covered with fine scales), dry or “ashy” skin, dermatosis papulosa nigra, and/or greater risk of keloid development.2,3 The incidence of skin cancer among US Hispanics has also increased 1.3% annually from 1992 to 2008.4
The benefits of topical agents for reversal of sun damage has been well established. Use of retinoic acid and its derivatives or other drugs to reverse and improve sun damaged skin has been demonstrated in many studies.17,18 Long-term sunscreenuse along with other topical agents have also been shown to prevent photodamage and hyperpigmentation in fair-skinned subjects.19 For effective photoprotection, sunscreen products containing both SPF and PPD are essential to battle the harmful UVB (skin cancer risks) and UVA (photo-aging risks).20 Daily use of a broad-spectrum sunscreen (SPF 30) over a one-year period has also been demonstrated to improve clinical parameters of photodamage in phototype I-III subjects.10
However, a comprehensive long-term sunscreen use study in skin of color is lacking. Therefore, this study was designed to assess the benefits of sunscreen of SPF30/PPD 20 in Hispanic women of Fitzpatrick skin types IV and V over 12 months in comparison to a real-life observational group with subjects who did not use sunscreen regularly.
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