Also, fashion can subtly show other information about a character. Women tend to wear lipstick shades and hair styles that were popular in their youth, even when they get older. You might also research actors who've played the part or photos of people who seem like the character to you. You might imitate the eyes of one, the hair of another and so on, constructing the character's look like a police sketch artist. Their skin and hair color may also reflect the weather they come from and home much time they spend outdoors.
Sea air can add wrinkles and a squint.
When hair is a significant part of the look, it may be better to use a wig so you have more control and have it intrude less on your off-stage life. A hat or wig also helps because you have less skin to deal with. You may also want some eye-catch features to help the audience remember your character. To keep your hands clean and maximize control, put the make-up on a brush or Kleenex and THEN on your face. It can also protect the skin.