MKS eco Oil is a leave-in hair oil elixir from Marrakesh's MKS eco line, formulated for normal-to-thick hair rather than the fine-hair MKS eco Oil Light. It combines Moroccan argan kernel oil and hemp seed oil with a base of smoothing silicones (cyclopentasiloxane, dimethiconol, and phenyl trimethicone) at a fuller-bodied consistency designed to control frizz, add shine, and improve manageability on hair with more density or texture than the Light formula is built for.
It can be applied to wet hair before blow-drying to help reduce drying time, or worked into dry hair as a finishing step to smooth the cuticle and tame flyaways. Because it carries more richness than the Light version, it's better suited to thick, coarse, curly, or dry hair that needs more conditioning weight to look smooth, rather than fine or thin hair. Its finish is glossy rather than matte, making it a common step for smoothing blowouts or taming frizz in humid conditions. The line is vegan, cruelty-free, and made without sulfates or parabens.