| Outcome | Grade | Effect | Studies | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Skin Elasticity | 
        C
       | 
 | 
 | |||||||
| Skin Smoothness | 
        C
       | 
 | 
 | |||||||
| Skin Thickness | 
        C
       | 
 | 
 | |||||||
| Wrinkles | 
        C
       | 
 | 
 | |||||||
| Skin Firmness | 
        C
       | 
 | 
 | |||||||
| Outcome | Grade | Effect | Studies | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Dermal Papillae | 
        C
       | 
 | 
 | |||||||
| Collagen Organisation | 
        C
       | 
 | 
 | |||||||
| Melanin | 
        C
       | 
 | 
 | |||||||
| Inflammation | 
        D
       | 
 | ||||||||