Determination of Product Thickness Applied on Different Areas of the Face Using a Multispectral Imaging Method

Determination of the Thickness Truly Applied of the SPRAY50+ on Different Areas of the Face Estimated by a Multispectral Imaging Method, After Application of the Product With and Without Recommendations of Use by a Group of Healthy Subjects

The aim of the study is to determine:

• the thickness of the RV4369A truly applied on different areas of the face after single application of the product determined by a multispectral imaging method.
• the influence of a second application of the product 15 to 30 minutes after the first application on the product thickness determined by multispectral imaging method.
• the influence of the recommendations of use provided to the subjects before application of the product on the product thickness determined by multispectral imaging method .

This study is a monocentric, comparative, open study performed on the face and forearms of healthy adults.

Planning of the visits:

Visit 1: Inclusion visit (D1) Visit 2: End of study visit (D10), a window of +/- 2 days is allowed for this evaluation, * The theoretical study duration for each subject is 10 days. The maximal study duration for each subject is 12 days.

Inclusion Criteria:

• Dry, normal to combination skin
• Phototype I to V inclusive.
• Absence of significant facial hair.

Exclusion Criteria:

Population

• Pregnant, breastfeeding women.
• For men: moustached or bearded.
• Substantial hair on the forearm and face.
• Application of keratolytic or self-tanning products to the face, forearms and arms in the four weeks prior to inclusion.
• With scars or other cutaneous characteristics, sunburn on forearms in the test areas, the size of which is considered incompatible with the study.
• Application of water, cleansing or beauty products to the forearms and arms since the last wash on the evening before inclusion.

Diseases :

• Known history of allergy to any of the investigational product ingredients.
• Known history of allergy to latex.
• Skin lesions or skin disease on the face or on the arms and forearms that may affect test results (seborrheic dermatitis, atopic dermatitis, psoriasis, acne, rosacea, etc.).

Treatments:

• Ongoing local or Oral treatment (retinoids, anti-inflammatory) that may affect test results.