How to choose your Teint Idole Ultra Wear Care & Glow shade? 1. Determine your shade number based on your skin tone: The number corresponds to the depth of your skin tone. • 100S: if you have very fair skin • 200S: if you have fair skin • 300S: if you have medium skin • 400S: if you have medium-deep skin • 500S: if you have dark skin 2. Choose the letter according to your skin undertone: The letter corresponds to the undertone of your skin. • C (Cool): your skin has a cool, pink/blue undertone. You rarely tan and tend to redden in the sun • N (Neutral): your skin has a neutral, beige undertone. You tan fairly easily • W (Warm): your skin has a warm, coppery/golden/olive undertone. You tan very easily, developing a golden tan Step 1: Prepare your skin On previously cleansed skin, apply one dose of the smoothing and hydrating primer, Priming Serum, to extend the wear of your foundation. Pat the formula in with your fingertips. Step 2: Even out your complexion Apply a small amount of your Teint Idole Ultra Wear Care & Glow foundation to the T-zone, forehead, sides of the nose, cheeks and chin. Blend the product outwards across the face. For a natural glow, apply your foundation with your fingertips. For a radiant, flawless finish, use a brush. Step 3: Correct your complexion Conceal dark circles and correct redness with the 2-in-1 concealer and foundation, Teint Idole Ultra Wear All Over Concealer.