Argan oil vs. silicone-based 'argan' serums - what's the difference?

Pure cold-pressed argan oil (Cliganic, Naturevibe-type products) is a single-ingredient carrier oil. Branded 'argan' serums like Moroccanoil and OGX are silicone-forward formulas with argan oil included. r/HaircareScience threads note the silicone versions feel sleeker immediately but can build up; the pure oils are lighter long-term but less dramatic out of the bottle.