Round Lab Birch Juice Moisturizing UV Lock Sunscreen SPF 45 vs Tatcha The Silk Sunscreen Broad Spectrum SPF50 PA++++ Hydrating Mineral Sunscreen 50ml
Round Lab
Birch Juice Moisturizing UV Lock Sunscreen SPF 45
~$22· 1.69 fl oz
Niacinamide
Tatcha
The Silk Sunscreen Broad Spectrum SPF50 PA++++ Hydrating Mineral Sunscreen 50ml
~$18· 50ml
Zinc OxideNiacinamideSqualane+3 more
Actives breakdown
| Active ingredient | Round Lab | Tatcha |
|---|---|---|
| Niacinamide | ✓ | ✓ |
| Zinc Oxide | — | ✓ |
| Squalane | — | ✓ |
| EGCG (Green Tea) | — | ✓ |
| Allantoin | — | ✓ |
| Vitamin E | — | ✓ |
Layering & Safety
Combined Verdict
Safe to layer
No layering conflicts flagged between these two. Patch-test new actives as usual.