Klairs' famous vitamin C serum is a must if you're looking for light moisture, luminosity and want to reduce dark skin spots. It contains 5% pure vitamin C, a powerful antioxidant that helps combat flaccidity. This vitamin is photosensitising, so you must apply high SPF when you use it in the morning. If in doubt, leave this serum for your evening skincare routine. Another MiiN bestseller is Klairs' vitamin E mask. The secret behind its success: it's extremely light and pleasant texture. It's pudding-like texture allows it to adapt perfectly to your face. Just like vitamin C, vitamin E is an antioxidant that helps maintain skin elasticity and creates a protective barrier for your skin. Although it's a night mask, a lot of Koreans actually use it as a moisturiser as well. These two products are the perfect match. Not only can they be used in the same routine – they're actually stronger together. Vitamin E helps stabilise vitamin C and soothes the skin after sun exposure.