To achieve glass skin, one should follow a consistent skincare routine that focuses on hydration, exfoliation, and protection. This includes using a gentle cleanser, hydrating toner, essence, serum, moisturizer, and sunscreen daily. Additionally, incorporating products with ingredients like hyaluronic acid, niacinamide, vitamin C, and exfoliating acids can help improve skin texture and brightness. Drinking plenty of water, eating a balanced diet, and getting enough sleep are also important for achieving glass skin.