Effects of Oral Collagen Drinks on Human Skin

The objective of this study is to evaluate the effect of oral collagen drink and MAXI collagen drink on human skin condition improvement.

Inclusion Criteria: * Healthy Chinese subjects aged 18 to 60 years, both male and female. * Wrinkle Severity: Crow's feet graded 2-4; under-eye fine lines graded 2-5; nasolabial folds graded 1-3. * Presence of facial skin laxity and sagging. * Ability to undergo skin examinations and pre-treatment in the designated test areas. * Ability to understand the trial process, participate voluntarily, and sign a written Informed Consent Form (ICF). Exclusion Criteria: * Pregnant or lactating women, or those planning to become pregnant in the near future. * Highly sensitive constitution, history of allergic diseases, or history of allergies to cosmetics. * Presence of skin diseases (e.g., psoriasis, eczema, atopic dermatitis, severe acne) or other chronic systemic diseases. * Skin conditions in the test area such as birthmarks, hyperpigmentation, inflammation, scars, nevi (moles), or hypertrichosis (excessive hair). * Use of anti-inflammatory drugs (e.g., oral or topical corticosteroids) within the past month. * Use of cosmetics or other products with similar efficacy within the past 2 weeks. * Participation in other human clinical trials for cosmetics within the past month. * Any other conditions deemed unsuitable for participation based on clinical assessment.