Thanks to Amazon's fresh Spring Sale, my go-to facial serum is now a whopping 52% off its usual price. The e-commerce giant kicked off the site-wide sale today (March 25), perfectly timed for Mother's Day, with a multitude of products marked down. Typically priced at £25.99, Cosrx's Advanced Snail 96 Mucin Power Essence is cheaper than half price, retailing at just £12.60 for a 100ml bottle. Since I discovered this serum last year, it has become an integral part of my daily skincare regimen. It