| Outcome | Grade | Effect | Studies | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Skin Brightness | 
        C
       | 
 | 
 | |||||||
| Fine Lines | 
        C
       | 
 | 
 | |||||||
| Hyperpigmentation | 
        C
       | 
 | 
 | |||||||
| Wrinkles | 
        E
       | 
 | 
 | |||||||
| Outcome | Grade | Effect | Studies | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Collagen | 
        D
       | 
 | ||||||||
| Inflammation | 
        D
       | 
 | ||||||||
| Outcome | Effect | Frequency | Studies | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Skin Discomfort | ⇧ Increase | — | ||||||||