If you have sensitive skin, it may be prone to itching, redness, dryness, or breakouts when using products that are too harsh. For that reason, the most important way to care for your skin is to choose products designed for your skin type. If your skin is extremely sensitive, or seems to be having frequent allergic reactions, you may need to visit a dermatologist for an allergy test to determine exactly what is causing the problems. This isn't required for most people, however.
To care for sensitive skin on the face, it is important to wash it twice a day. Choose a cleanser that is soap-free and mild, without additions like salicylic acid or benzoyl peroxide, which can be irritating and drying. Some cleansers are designed to calm skin, and may include ingredients such as feverfew or chamomile. Avoid cleansers that contain fragrance, and try to choose a product with as few ingredients as possible. Liquid cleansers are generally a good choice.
Next, it is important to moisturize the skin. Again, many moisturizers are specifically designed for skin that is sensitive and are marked as such. In general, it is a good idea to choose a moisturizer that is non-comedogenic, fragrance free, and hypoallergenic. Avoid oil-based products. You may want to test a moisturizer in a small area before spreading it all over your face and causing a potential reaction. Apply a small amount every day for a few days either on the jawline or behind the ear, and wait to see if any adverse reaction occurs.
The same rules apply for makeup: it should be oil free and non-comedogenic, as well as fragrance free. Experts recommend using powder foundation instead of liquid, and choosing pencil eyeliner instead of liquid. It may be necessary to test makeup as well. In general, it is best to avoid using waterproof makeup that needs to be removed with makeup remover, because the makeup remover can irritate the skin.
Many moisturizers contain sunscreen, but if yours doesn't, it is important to apply one every day. It may be best to choose one that uses zinc oxide or titanium dioxide, because these sit on top of the skin and reflect the sun, rather than soaking in. Though it may take some trial and error to find products to successfully care for sensitive skin, it will be worth it when your skin is soft, smooth, and even-toned.