The O HUI Dual Mascara Volume & Serum combines two products in one package: a volumizing mascara and a separate lash-conditioning serum.
Why combine mascara and serum?
The idea is convenience. One side is used for visible volume and color, while the serum side is intended as a conditioning step for the lashes.
Does lash serum make lashes grow?
Not every cosmetic lash serum is a growth treatment. Unless a product contains a proven growth-active drug, it is safer to think of it as conditioning and supporting the appearance of healthier lashes rather than dramatically changing lash length.
Who is this for?
It suits someone who wants a more polished mascara and likes the idea of a conditioning step without buying a separate product.
What should you compare?
Brush shape, removal, smudging, comfort around the eyes and whether you actually use the serum side are more important than the two-in-one concept itself.
Blushcraft currently carries the Dual Mascara Volume & Serum.
Bottom line
Buy it for the mascara first; treat the serum side as an added conditioning feature.