The Safety and Efficacy Assessment of Cosmetic Products Containing Assam Tea Extracts in Volunteers.

Inclusion Criteria: * Aged 35 years and older * Good physical and mental health * Willing and able to provide informed consent to participate and complete the entire duration of the study Exclusion Criteria: * Women who are pregnant or breastfeeding * Presence of existing dermatological conditions * History of autoimmune disorders * Prior use of products related to wrinkle reduction or those containing active ingredients that stimulate collagen or elastin production, including topical and oral products used within the past three months (e.g., coenzyme Q10, marine extracts, pine bark extract, glutathione, and vitamin C) * Participation in any other volunteer study or program within the past three months * Use of the following medications within the past three months: contraceptives, phenytoin, hydantoin, levodopa, chloroquine, cancer chemotherapy drugs, or medications containing heavy metals * History of receiving dermatological or cosmetic procedures such as IPL (Intense Pulse Light) laser, phonophoresis, iontophoresis, laser treatments, Botox injections, fillers, or stem cell injections * Volunteers who exhibit sensitivity or irritation to the test products used in the study