Now that Autumn is upon us keeping our skin hydrated and healthy is one of our top priorities, and if there’s one beauty trend we’ll be abiding by it’s the Korean beauty-inspired 'glass skin'.The trend has been going viral on TikTok for months now and involves giving your skin a hefty dose of hydration to create glossy, glass-like results.There’s one product that TikTokers swear by for boosting moisture – and it’s currently got 45% off in the Amazon Prime Day sale. The COSRX Advanced Snail 96 Mucin Power Essence, £12.09 here (was £21.99), has been lauded as a must-have serum for creating hydrated skin as well as soothing sensitive skin and helping reduce the signs of ageing.