COSRX Airy-Light Invisible Sun Stick 19g vs Round Lab Birch Juice Moisturizing Sun Stick 19g (SPF 50+ PA++++)

COSRX Airy-Light Invisible Sun Stick 19g and Round Lab Birch Juice Moisturizing Sun Stick 19g (SPF 50+ PA++++) share 16 parsed ingredients. Differences highlighted below.

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Shared 16COSRX Airy-Light Invisible Sun Stick 19g only 18Round Lab Birch Juice Moisturizing Sun Stick 19g (SPF 50+ PA++++) only 17

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Shared formula

31%

Ingredients in every formula: 16in both formulas
Key actives unique to one formula: 4unique actives
Ingredient rows compared: 51rows compared

From the parsed labels — rows on every label over all compared rows.

The formulas, row by row

51 ingredients across 2 labels

Differences only(35 of 51 rows)

Shared ingredients· none here

Product facts and full ingredient lists side by side
on 2+ labelsonly on this labelnot on this labelIngredient	Recommended COSRX COSRX Airy-Light Invisible Sun Stick 19g $0.00 $20.74 at Dodoskin ↗	Round Lab Round Lab Birch Juice Moisturizing Sun Stick 19g (SPF 50+ PA++++) $41.00 $41.00 at Kbeautymakeup ↗
Basics
Type & size	Sunscreen · size not on the record	Sunscreen · size not on the record
Brand origin	Korean	Korean
Offers
Where to buydiffers	$20.74 · Dodoskin	$41.00 · Kbeautymakeup
Formula
Key activesdiffers	ceramide np, niacinamide, allantoin, panthenol, sodium hyaluronate	niacinamide, hyaluronic acid, ascorbic acid, sodium hyaluronate, allantoin
Free ofdiffers	fragrance-free, sulfate-free, alcohol-free, paraben-free	fragrance-free, sulfate-free, alcohol-free, paraben-free, silicone-free
Heads-updiffers	fungal-acne trigger · high pore-rating flag	fungal-acne triggerPore data not yet reviewed
Fit & community
Rating	No reviews yet	No reviews yet
Best for	Not recorded	Not recorded
Data quality
Label coveragediffers	Fully parsed · 34 ingredients	Fully parsed · 33 ingredients
Key actives · 4
ceramide np	yes	no
hyaluronic acid Pregnancy: generally fine	no	yes
pro-vitamin b5	yes	no
vitamin c	no	yes
Rest of the labels · 31
aloe barbadensis leaf extract	no	yes
aloe barbadensis leaf water	yes	no
betula platyphylla japonica juice	no	yes
bis-ethylhexyloxyphenol methoxyphenyl triazine	yes	no
bisabolol	yes	no
butylene glycol	no	yes
caprylyl methicone	yes	no
ceresin	yes	no
dibutyl adipate	no	yes
dicaprylyl carbonate	yes	no
dioscorea japonica root extract	no	yes
dipotassium glycyrrhizate	no	yes
disteardimonium hectorite	yes	no
ethylhexyl palmitate Possible fungal-acne trigger	yes	no
glycerin	no	yes
glyceryl glucoside	no	yes
laminaria japonica extract	no	yes
lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone	no	yes
methyl methacrylate crosspolymer	yes	no
neopentyl glycol diheptanoate	yes	no
polyglyceryl-5 polyricinoleate Possible fungal-acne trigger	no	yes
portulaca oleracea extract	no	yes
propylheptyl caprylate	yes	no
silica	yes	no
sodium chloride	no	yes
tocopheryl acetate	yes	no
triethoxycaprylylsilane	yes	no
triethyl citrate	yes	no
ulmus davidiana root extract	no	yes
viola mandshurica flower extract	no	yes
zinc pca	yes	no

Rows come from parsed labels and live offers. Where a label isn’t fully captured, we say so instead of guessing.

The bottom line

Choose COSRX if you want Ceramide Np in the formula.

Choose Round Lab if you want Vitamin C in the formula.

Both lines come from the parsed labels and the prices on this page — neither product is the reference, and neither is called the better one.

This is not medical advice.

Focus on an effect

All ingredients

Brighten & fade dark spots Clear breakouts Smooth fine lines Hydrate & plump

Calm redness Refine texture Repair & strengthen Protect from sun

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Suggested from shared ingredients on the parsed labels — each pair opens as its own comparison.