The goal of this clinical trial is to study whether the products with nicotinamide fortified could improve skin whitening in 30 to 50-year-old women.

Partipants will be randomly assigned to two study groups and use products (study product plus nicotinamide supplement and placebo product without nicotinamide supplement) for 2 months, twice a day.

Researchers will compare the two groups whether there are significant improvement in skin whitening via skin measurement and analysis systems.

This study is two arms, randomized, double-blind controlled trial. 70 eligible partipants at two study sites will be enrolled and use randomly assigned products (study product plus nicotinamide supplement and placebo product) for 2 months. Participants will visit the study site for three times on baseline day, day 30, and day 60, all relevant data will be captured, measured via professional skin equipment system and recorded in the data management system. At the end of study, the explantory and statisitcal analysis will be conducted to validate the assumption that the using products with nicotinamide fortified could improve skin whitening in 30 to 50-year-old women.

Inclusion Criteria:

• Chinese females, age between 30-50;
• Be in general good health;
• Understand the test procedure, read, and sign an appropriate Informed Consent Form indicating their willingness to participate;
• Be free from tattoos, cuts, scratches, abrasions, scars, uneven skin tone, sunburn, excessive tanning, open wounds, excessive hair, and visible skin disease on the inner forearm;
• Has the skin lightness parameter L* < 60 on the inner forearm the beginning of the product application phase;
• Willing and able to follow all study directions, undergo skin examination and commit to all follow-up visits;
• Individuals in good general health (no physical required) and not taking any prescribed medicines (except for oral contraceptives or asthma inhalers) that could interfere with the conduct of the study;
• Agree to not use any other creams, lotions, moisturizers on the face, other than what is provided for the duration of the study;
• Agree to refrain from wearing make-up (such as foundation, eye shadow, lipstick etc.) or any skin care products on the face on the study visits;
• Agree to avoid washing the treatment site area for two hours following product application and agree to avoid washing appliances (i.e., sponge, wash cloth, loofah, etc.).

Exclusion Criteria:

• Have used any skin lightening /anti-aging benefits products at least one month before this study
• Subject having done facial injections and/or aesthetic surgery.
• Be involved in any aspect of test administration, i.e., evaluating or overseeing activities related to product.
• Have participated in any clinical study involving the test sites within the previous 6 months, or is subject participating in any clinical study concurrently.
• Have a history of any type of bottlecer, including but not limited to any type of skin bottlecer (squamous or basal cell carcinoma at the treatment site) or history of malignant melanoma at any body site.
• Have a history of skin disease or the presence of a skin condition on the test sites that the Investigator feels would interfere with the study.
• Be taking antihistamines (> 3x/week) or anti-inflammatory (> 8x/week) on a regular basis, or has the subject taken systemic or topical steroidal medications within 4 weeks of study enrolment.
• Have any of the following conditions or factors that the investigator believes may affect the response of the skin or the interpretation of the test results, including, but not limited to, diabetes, pregnancy, lactation.
• Have any cuts/abrasions on the test site at baseline.
• Have had a suspicious skin lesion removed by a dermatologist at any time.
• The subject is an employee of sponsor or the site conducting the study.

must be momen of 30 to 50 years old