Strong fragrance and I'm not even sensitive to smells.  Doesn't appear to do much or make any noticeable difference. Rarely burns when used in conjunction with other products.

Consistency like water, easy to apply with cotton or directly to face. Fragrance can be refreshing, smells like aloe perfume. Can be layered with most other products. Dries fast and non-sticky.  Affordable option.

No dramatic effect but feels like it helps slightly with fine lines. Does not reduce dark circles.

Very pleasant texture when applied, makes skin immediately feel silkier and smoother.  Doesn't cause millia around the eyes. Slightly helps with puffy eye bags. Not oily or sticky. A little goes a long way. Affordable. 

Sticky consistency, can leave tackiness on face. Does burn if there is any small broken skin. 

Very affordable.  My first niacinamide product so when I started using it, my sensitive oily skin reacted with angry red blotches (not sure if it was the zinc also). I stopped it right away and eventually eased back into it by only applying it around the oily zones on my face.  Now my skin tolerates an all-over application and it does give a dewy appearance afterwards. No more breakouts or redness, and face looks more hydrated.

Hydrating effect doesn't seem to last very long; sometimes I would notice peeling skin in sensitive dry patches within an hour and would have to reapply.

Great consistency and gel feel for my oil-prone skin.  Cooling effect, fast absorbing, breathable layer.  Face feels immediately calmed and hydrated. I use this for the hot summer months when heavier creams are too suffocating.  Affordable option.  Easy to pair with other products, I haven't had any adverse reactions with anything so far.  Comes in an aesthetically pleasing glass bottle with convenient pump.

Strong chemical odour to each solution that may bother those with scent sensitivity.  Black peeling mask may be difficult to apply with your fingers (no applicator provided) since it's gooey and can get messy.  If the proper thickness isn't applied in certain areas then the peel doesn't work.  It does miss some blackheads and pores.

Comes in easy-to-follow 3-step process: sebum softener > black peeling mask > pore tightener.  Black mask dries in 10-15 minutes if applied properly and is satisfying to peel off as you can watch clogs pulled out of your pores.  Does not hurt as much as classic nose strips, and can be washed off in case it's stuck on your face.  Since it comes in a thick liquid, you can choose the areas to apply and contour it to your features.

Amyface