Skin care Sahajan Skincare’s Lisa Mattam on clinical testing to validate old-world beauty ingredients, plus beauty news from L’Oréal, Coty and Byredo – glossy.co June 19, 2025 jhgreene Sahajan Skincare’s Lisa Mattam on clinical testing to validate old-world beauty ingredients, plus beauty news from L’Oréal, Coty and Byredo glossy.co