Dr. Simone Xavier, co-founder of Sigma Beauty, joins us to talk all about brushes. Dr. Xavier created Sigma with her husband with a unique background. Having received a Ph.D. molecular bacteriology and infectious diseases and a masters in veterinary pathology, she knows a thing or two about how bacteria spreads — something we need to heed now more than ever. We are huge fans of Sigma brushes and chances are you've seen the brand's incredible cleansing mats and gloves. Dr. Xavier explains exactly how to make a disinfecting spray at home, why diluting your alcohol mixtures to 70% is crucial to their effectiveness and how Sigma brushes are built to outlast their competitors.What's on Your FaceBeautyStat Universal C Eye Perfector, $65Masami Mekabu Shampoo & Conditioner, $38Sigma F80 Brush, $25 (Sara's favorite)Sigma 4DHD Precision Brush, $20 (Kirbie's favorite)Sigma Spa Express Brush Cleansing Mat, $24Sigma 2X Spa Brush Cleansing Glove, $39SigMagic Brushampoo Liquid, $19 See acast.com/privacy for privacy and opt-out information.