Polydimethylsiloxane (PDMS) has recently emerged as a highly sought-after core ingredient in cosmetics, lauded for its exceptional texture and stable performance. As the most widely used silicone component, it features a Si–O–Si backbone structure, offering hydrophobicity, breathability, film-forming ability and excellent spreadability, and is applied across skincare, makeup, hair care and other categories. This ingredient enhances application smoothness, reduces clumping and greasiness, and delivers a blurring effect. It forms a protective, breathable layer on skin to lock in moisture, support barrier repair, and boost water resistance and long-wear properties of sunscreens and cosmetics. In hair care, it smooths cuticles, tames frizz and adds shine. With extremely low skin absorption and irritation rates, PDMS is approved by FDA, CIR and other authorities, safe at concentrations of 0.5%–15%. Professional clarifications refute myths like clogged pores and acne, noting such issues stem from formulation and cleansing, not PDMS itself. As consumers demand better texture and safety, PDMS will keep empowering cosmetic innovation, delivering reliable, pleasant experiences for all skin types. For more information, please visit: https://www.tiktok.com/@mia_iota/video/7597717976720149782