Final answer:
Horace advises embracing natural appearance and discourages the use of cosmetics.
Step-by-step explanation:
In Satire III, Horace advises a person to be content with their natural appearance and not try to enhance or change it. He criticizes the use of cosmetics and artificial beauty, suggesting that one should embrace their natural beauty as created by nature. Horace's message promotes self-acceptance and discourages the pursuit of superficial beauty standards.