If you’ve been scrolling through Instagram or TikTok lately, you’ve no doubt seen double cleansing make its mark—this two-step method is trending in skincare with good reason. The technique involves an oil-based cleanser to dissolve makeup, sunscreen, and pollution, followed by a water-based cleanser to sweep everything else away. The concept originated in Korean and Japanese beauty rituals, where glowing, glass-like skin is considered the ultimate goal.