Side-by-side comparison

Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ vs Round Lab Birch Juice Moisturizing Sunscreen SPF 50+

Both are sunscreens built on the same key active: SPF / Sunscreen. That makes them genuine alternatives, so price, texture and the supporting ingredients decide it.

1Shared hero active

Beauty of Joseon

Relief Sun : Rice + Probiotics SPF 50+

SunscreenBudgetMorning only

protectDamaged BarrierDullness

Chemical SPF with rice extract and fermented lactobacillus filtrate — lightweight, hydrating, non-whitecast and affordable. One of the most-recommended K-beauty sunscreens for daily face use. European filters, so US availability is via grey import.

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Round Lab

Birch Juice Moisturizing Sunscreen SPF 50+

SunscreenBudgetMorning only

protectDamaged Barrier

A hydrating chemical SPF with birch juice as the primary base (replacing water in the formula). Light, comfortable finish; hydrating without being greasy. One of the go-to affordable K-beauty daily sunscreens.

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The verdict

Which should you choose?

Both formulas lean on SPF / Sunscreen, so for the ingredient doing the work they're close alternatives. Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+ is the better fit for dullness. Both sit in the Budget price tier.

The overlap

What they share

This hero active appears in both formulas:

SPF / Sunscreen

The formulation

Ingredient stacks, side by side

Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+ — top of the list

Water~50–80%
Oryza Sativa (…~5–25%
Dibutyl Adipate~3–10%
Diethylhexyl B…~2–6%
Ethylhexyl Tri…~1.5–4%
Butyl Methoxyd…~1–2%
Bis-Ethylhexyl…~1–2%
Propanediol~1–2%
Glycerin~1–2%

Round Lab Birch Juice Moisturizing Sunscreen SPF 50+ — top of the list

Betula Platyph…~50–80%
Butyl Methoxyd…~5–25%
Ethylhexyl Met…~3–10%
Dicaprylyl Car…~2–6%
Propanediol~1.5–4%
Glycerin~1–2%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

	Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+	Round Lab Birch Juice Moisturizing Sunscreen SPF 50+
Category	Sunscreen	Sunscreen
Price tier	Budget	Budget
Best for	protect, Damaged Barrier, Dullness	protect, Damaged Barrier
Usage notes	Morning only	Morning only
Shared hero actives	SPF / Sunscreen

Questions

Common questions

Is the Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ or the Round Lab Birch Juice Moisturizing Sunscreen SPF 50+ better?

Neither is clearly better on ingredients, since both rely on SPF / Sunscreen. Choose on price, texture and how your skin responds to the rest of the formula.

What's the difference between the Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ and the Round Lab Birch Juice Moisturizing Sunscreen SPF 50+?

Beauty of Joseon Relief Sun: Rice + Probiotics SPF 50+'s hero actives are SPF / Sunscreen. Round Lab Birch Juice Moisturizing Sunscreen SPF 50+'s are SPF / Sunscreen.

Are the Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ and Round Lab Birch Juice Moisturizing Sunscreen SPF 50+ dupes for each other?

Yes, on the ingredient that matters. Both are built around SPF / Sunscreen, though concentrations, texture and the supporting ingredients can still differ.

Can I use the Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ and Round Lab Birch Juice Moisturizing Sunscreen SPF 50+ together?

You only need one sunscreen per application. Use whichever you'll apply generously and reapply, and keep the other for a different setting if you like both.

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