# Round Lab Birch Juice Moisturizing Sun Cream SPF50+ PA++++

> Round Lab Birch Juice Moisturizing Sun Cream is an SPF50+ PA++++ Korean sunscreen using Uvinul A Plus, ethylhexyl triazone, Tinosorb M and diethylhexyl butamido triazone, with birch juice, hyaluronic acid and niacinamide. UK retailers listed it at £21 for 50ml in 2026. This is desk research from published specifications, not a hands-on test.

- Canonical: https://thecastindex.com/beauty/round-lab-birch-juice-moisturizing-sun-cream
- Category: SPF
- Format: Cream sunscreen
- Finish: Moisturising, no white cast
- Best for: Daily SPF with a moisturising cream texture
- Official: https://roundlab.co.kr/product/detail.html?product_no=138
- Reviewed: 2026-09-25
- Method: evidence-led desk review of official specifications — not an implied hands-on test

## Should you buy this?

A moisturising SPF50+ PA++++ cream with modern UK/EU filters, birch juice and hyaluronic acid, at around £21. Choose it when you want the sunscreen to double as the last moisturising layer. It has no added parfum but does list botanical oils.

Skip this if you want a strictly fragrance-free formula with no botanical oils, a water-resistant sunscreen, or a very light fluid for oily skin.

The moisturising cream in the Korean SPF edit: one comfortable layer between skincare and a sheer base.

## The formula

Round Lab’s Birch Juice Moisturizing Sun Cream is a chemical sunscreen labelled SPF50+ PA++++ on UK retailer listings. It uses four modern filters permitted in the UK and EU — Uvinul A Plus, ethylhexyl triazone, Tinosorb M and diethylhexyl butamido triazone — while birch juice, hyaluronic acid and niacinamide make it read as a moisturiser as much as a sunscreen.

Retailers describe a soft, creamy texture with no white cast. Boots and LOOKFANTASTIC publish slightly different ingredient panels — pine leaf extract versus oil, and German versus Roman chamomile — so check the pack you receive if you avoid specific botanicals.

## Who it’s for

Normal to dry skin, or anyone who wants the sunscreen to double as the final moisturising step in the morning. Oilier skin may find a serum or fluid sunscreen easier to wear under foundation.

## What should you check before buying?

Buy the international SPF50+ PA++++ version from an authorised UK retailer: Round Lab’s US store sells different, US-market sunscreens. No water resistance is claimed. The botanical oils mean it is not strictly fragrance-free for readers who react to essential oils.

## How to use it

1. Apply as the final step of morning skincare, before makeup
2. Use enough to cover face, neck and ears evenly
3. Reapply at least every two hours outdoors, and after swimming, sweating or towelling
4. Check the botanical ingredients on your pack if you have fragrance sensitivities

## Questions and answers

### Is Round Lab Birch Juice Moisturizing Sun Cream fragrance-free?

There is no added parfum, but UK listings include chamomile and pine-leaf botanicals, which some readers with fragrance sensitivities avoid. Check the ingredient list on your pack.

### Is it the same as the Round Lab sunscreen sold in the US?

No. Round Lab’s US store sells US-market sunscreens with different filters. The SPF50+ PA++++ sun cream sold by UK retailers is the international formula.

### Does Round Lab Birch Juice Sun Cream leave a white cast?

Retailers describe no white cast, and the formula contains no zinc oxide or titanium dioxide. That is a formula description, not a Cast Index wear test.

## Explore the category

https://thecastindex.com/beauty/category/spf