Chi Silk Infusion vs BioSilk: Which Hair Serum Wins?
Chi Silk Infusion is a lightweight reconstructing serum by Farouk Systems that uses silk and wheat proteins to smooth hair. BioSilk Silk Therapy, created by Farouk Systems in 1986, is the original silk-infused serum that seals cuticles and adds shine.
Both bottles sit side-by-side on salon shelves and both have “silk” in the name, so shoppers often grab the wrong one. Stylist chatter and online abbreviations like “silk drops” blur the lines even more.
Key Differences
Chi Silk Infusion is alcohol-free, heat-activated, and designed for thermal protection up to 450 °F. BioSilk contains ethyl alcohol for faster drying, is heavier on silicones, and doubles as a skin smoother. Chi targets repair; BioSilk aims for glass-like gloss.
Which One Should You Choose?
Pick Chi Silk Infusion if you flat-iron daily and want flexible, weightless strands. Go BioSilk when you crave red-carpet shine, have thick or coarse hair, or want a serum that moonlights as a body gloss.
Can I layer both serums?
Yes, but use a pea-size of each to avoid buildup; apply Chi first for heat defense, then BioSilk for shine.
Are these cruelty-free?
Both brands state “not tested on animals,” yet they are sold in markets that may require post-market testing.
Will either serum weigh down fine hair?
Chi Silk Infusion is lighter; BioSilk may feel heavy if over-applied, so start with two drops on fine hair.