Cosmetic therapy provides a psychological effect on the elderly, improving their self-confidence and social participation. This study was conducted to investigate the effectiveness of cosmetic therapy to enhance the self-esteem and reduce depression of elderly residents in long-term care institutions. We expect that a 6-week cosmetic therapy will improve the elderly's mental health, including depression and self-esteem.

Inclusion Criteria:

• Aged over 65 years old.
• Having been admitted to a long-term care institution (conservation type) for three months.
• Be able to communicate in Mandarin, Taiwanese and written languages.
• The total score of Mini-mental state examination (MMSE) is higher than 24 points.
• The muscle strength of the left or right hand is 4 points (inclusive) or above, and the maintenance and makeup procedures can be operated with one or both hands.
• After the researcher's explanation, the participant is willing and able to give informed consent for participation in the study.

Exclusion Criteria:

• Under the age of 65.
• The applicant has been admitted to a long-term care institution (conservation type) for less than three months.
• Unable to communicate in Mandarin, Taiwanese and written language.
• Participated in cosmetic therapy.
• Diagnosed with mental illness (except depression), dementia and delirium.
• Currently taking antidepressant drugs.
• Currently receiving depression-related treatment.
• The maintenance and makeup steps cannot be operated with assistance.
• Failure to sign the research consent form.