Review (5/5): I recommend this as an affordable option.
All the serums are thicker, almost gel like, compared to what I'm used to. They all absorb quickly and smoothly and should work well under makeup.
The vitamin C is clear and has almost no scent except for maybe the faintest hint of sweet almond. I wouldn't call it "ultra-brightening", but it produces an average glow.
The hyaluronic is cloudy, has a slight "not fun" smell, and didn't feel like it moisturized.
The retinol is beige and has a slight alcohol smell in the bottle but isn't noticeable when applying. It didn't feel like it moisturized either. It made me itchy, which is surprising because I regularly use concentrated retinol. I
These don't stand out as the best serums I've used, but they're probably the least expensive for average results. Definitely make sure to adjust to the retinol.