They’re frequently marketed for coarse or naturally frizzy hair, though many product listings also state they’re suitable for all hair types and textures.
Sizes typically range from about 1.6 fl oz up to 6 fl oz. Common sizes seen in listings include 1.6 fl oz, 1.7 fl oz, 3.3 fl oz, 4 fl oz, 5.1 fl oz, and 6 fl oz.
Dispense a pump or a small amount into your hands and smooth through mid-lengths to ends. Most serums can be applied to damp or dry hair and are intended as leave-in treatments.
Some listings and customer reviews note compatibility with color-treated hair. Additionally, at least one serum in the results is specifically described as formulated for chemically damaged hair and positioned as part of a damage-repair regimen.
Customers and product notes frequently describe serums as lightweight, fast-absorbing, and non-greasy or non-sticky, often noting that a small amount goes a long way.
