In skincare and makeup formulations, there’s a key ingredient that often goes unnoticed by consumers yet plays a crucial role—IOTA 345, a blend of cyclopentasiloxane (D5) and cyclohexasiloxane (D6). This colorless, volatile silicone oil is prized for its unique physicochemical properties, making it a behind-the-scenes hero in modern cosmetics.

Why is IOTA 345 So Popular?

1. Lightweight & Non-Greasy – Unlike traditional mineral or plant oils, IOTA 345 spreads effortlessly on the skin, delivering a silky-smooth feel without leaving a heavy residue. This makes it ideal for summer or oily skin formulations.

2. Controlled Volatility – It evaporates slower than alcohol (avoiding a chilling effect) but faster than conventional silicones, ensuring no long-term buildup on skin or hair.

3. Excellent Compatibility – It blends seamlessly with various cosmetic ingredients (e.g., mineral oils, botanical extracts, UV filters), enhancing product stability and even distribution of active compounds.

4. Makeup Performance Booster – In foundations and primers, IOTA 345 reduces surface tension, helping pigments disperse evenly for longer-lasting, flawless wear.

Is It Safe?

Regulatory bodies like the EU and US FDA have approved D5/D6 for cosmetic use, with studies confirming their safety at typical application levels. However, due to environmental concerns over biodegradability, some brands are exploring sustainable alternatives.

Future Trends

As demand grows for "clean beauty" and eco-friendly formulations, the industry is innovating next-gen volatile silicones. Yet, for now, IOTA 345 remains a staple—delivering unparalleled sensory benefits while quietly elevating product performance.

Next time you enjoy a lightweight moisturizer or a seamlessly blended foundation, remember: IOTA 345 might just be the unsung hero behind that flawless experience.