GUERLAIN have added yet another beauty must-have to their legendary honey-infused skincare collection, Abeille Royale – but this time, it’s for your hair! The Abeille Royale Scalp & Hair Youth Oil-in-Serum offers the original facial Advanced Youth Watery Oil serum’s luxurious yet watery lightness and clinically proven results, but reimagines it as hair care…   … Continue reading GUERLAIN Abeille Royale Scalp & Hair Youth Oil-in-Serum Review