Determination of the Sun Protection Factor (SPF) of a Cosmetic Daily De-fence Skin Cream

A single-center, randomized, evaluator blind, intra-individual comparison, no treatment and positive controlled clinical study to determine the SPF of Physiogel Daily Defence Protective Day Cream Light as per ISO 24444:2010. The provisional minimal erythemal dose of unprotected skin (MEDu) for each subject will be determined before starting the test phase. Once the provisional MEDu for a subject has been determined, the three test sites will be demarcated. The test product and positive control (P3 reference sunscreen formulation) will be applied to two of the three test sites. The other test site will remain unprotected. All three test sites will be exposed to UV radiation at the expected MED and subsequently evaluated for erythema 16-24 hours after UV exposure.

Inclusion criteria

• Demonstrates understanding of the study procedures, restrictions and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form
• Good general and mental health with, in the opinion of the investigator or medically qualified designee no clinically significant and relevant abnormalities in medical history or upon physical examination
• Subjects with a Fitzpatrick Skin Type of I, II or III
• Subjects with an Individual typological angle (ITA°) greater than 28°

Exclusion criteria

• Women who are known to be pregnant or who are intending to become pregnant over the duration of the study
• Women who are breast-feeding or lactating
• Subjects having used medication with known photo-toxic and/or photosensitizing potential (e.g. hypericum perforatum, antibiotics, blood pressure regulating agents) up to 14 days prior to screening
• Subjects with a history of systemic therapy with anti-inflammatory agents or analgesics (e.g. diclofenac) up to 3 days prior to screening
• Subjects with dermatological conditions
• Subjects with a history of abnormal response to the sun
• Subjects who are tanned or have had sun exposure on the back area in the previous 4 weeks prior to screening
• Subjects having marks, blemishes or nevi or presenting existing sun damage in the test area
• Subjects having excessive hair, moles, tattoos, scars or other imperfections in the test area that could influence the investigation
• Subjects with a history of systemic therapy with immuno-suppressive drugs (e.g. corticosteroids) and/or antihistamines (e.g. anti-allergics) up to 7 days prior to screening
• Subjects with a non-uniform skin colour or hyperpigmentation in the test area
• Subjects with a medical history of dysplastic nevi or melanoma
• Subjects with one of the following illnesses that might require regular systemic medication: Insulin-dependent diabetes, cancer
• Subjects with asthma, unless medicated
• Subjects with an electronic implant (e.g. pace maker, insulin pump, hearing aid) that cannot be removed during irradiation
• Acquired immune deficiency syndrome (AIDS) and infectious hepatitis, if known to the subjects
• Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients
• Known allergy to latex
• Participation in another clinical study (including cosmetic studies) or receipt of an investigational drug within 30 days prior to screening
• Participation in another clinical study involving UV exposure to the same test site up to 2 months prior to screening
• Previous participation in this study
• Recent history (within the last 5 years) of alcohol or other substance abuse
• Subjects who have used a tanning bed or other tanning treatment on the back area up to 1 month prior to screening
• Subjects accustomed to using tanning beds
• Subjects who have used self-tanning products on the back area in the previous 1 month prior to screening
• An employee of the sponsor or the study site or members of their immediate family
• Subjects who will turn 71 years old before completing all assessment visits