AHC Masters Tone-Up Sun Serum SPF50+ PA++++ 50ml vs Round Lab, Birch Juice Mild-Up UVLock Sunscreen, SPF 50+, 1.69 fl oz (50 ml)

AHC Masters Tone-Up Sun Serum SPF50+ PA++++ 50ml and Round Lab, Birch Juice Mild-Up UVLock Sunscreen, SPF 50+, 1.69 fl oz (50 ml) share 22 parsed ingredients. Differences highlighted below.

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Shared formula

29%

Ingredients in every formula

22in both formulas

Key actives unique to one formula

5unique actives

Ingredient rows compared

76rows compared

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

The formulas, row by row

76 ingredients across 2 labels

Differences only(54 of 76 rows)

Shared ingredients· none here

Product facts and full ingredient lists side by side

on 2+ labelsonly on this labelnot on this labelIngredient	Recommended Ahc AHC Masters Tone-Up Sun Serum SPF50+ PA++++ 50ml $19.24 $24.75 at Dodoskin ↗Save	Round Lab Round Lab, Birch Juice Mild-Up UVLock Sunscreen, SPF 50+, 1.69 fl oz (50 ml) $25.20 Save
Basics
Type & size	Sunscreen · size not on the record	Sunscreen · size not on the record
Brand origindiffers	Not recorded	Korean
Offers
Where to buydiffers	$24.75 · Dodoskin	Not recorded
Availabilitydiffers	Not recorded	in stock
Formula
Key activesdiffers	zinc oxide, niacinamide, titanium dioxide, ceramide np, sodium hyaluronate, panthenol, hyaluronic acid	zinc oxide, sodium hyaluronate, hyaluronic acid, ascorbic acid
Free ofdiffers	sulfate-free, alcohol-free, paraben-free	fragrance-free, sulfate-free, alcohol-free, paraben-free
Heads-up	fungal-acne triggerPore data not yet reviewed	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 · 63 ingredients	Fully parsed · 35 ingredients
Key actives · 5
ceramide np	yes	no
pro-vitamin b5	yes	no
titanium dioxide Pregnancy: generally fine	yes	no
vitamin b3	yes	no
vitamin c	no	yes
Rest of the labels · 49
1,2-hexanediol	no	yes
a silicone	yes	no
adenosine	yes	no
aluminum hydroxide	yes	no
anthemis nobilis flower oil	no	yes
arginine	yes	no
artemisia annua extract	no	yes
ascorbyl tetraisopalmitate Pregnancy: generally fine Possible fungal-acne trigger	yes	no
bamboo vinegar	yes	no
betula platyphylla japonica juice	no	yes
c9-12 alkane	yes	no
caesalpinia spinosa fruit extract	yes	no
calcium carbonate	yes	no
caprylyl glycol	no	yes
carbomer	yes	no
cholesterol	yes	no
ci 77491	yes	no
ci 77492	yes	no
cryptomeria japonica leaf extract	no	yes
cyclohexasiloxane	no	yes
cystine	yes	no
dimethiconol	yes	no
diphenylsiloxy phenyl trimethicone	yes	no
dipropylene glycol	yes	no
erythritol	yes	no
ethylhexyl methoxycrylene	yes	no
fragrance	yes	no
glutamine	yes	no
glyceryl caprylate	no	yes
glyceryl glucoside	no	yes
glycine	yes	no
hippophae rhamnoides fruit extract	yes	no
hydrogenated lecithin	yes	no
hydrolyzed hyaluronic acid Pregnancy: generally fine	yes	no
hydrolyzed sodium hyaluronate Pregnancy: generally fine	yes	no
hydroxypropyltrimonium hyaluronate Pregnancy: generally fine	yes	no
kappaphycus alvarezii extract	yes	no
methylpropanediol	yes	no
nelumbo nucifera leaf extract	no	yes
octyldodecanol	yes	no
pentylene glycol	yes	no
pinus sylvestris oil	no	yes
polyglyceryl-4 isostearate Possible fungal-acne trigger	yes	no
polymethylsilsesquioxane	no	yes
sorbitol	yes	no
stearic acid Fungal-acne trigger	yes	no
trimethylsiloxysilicate	yes	no
trisiloxane	yes	no
trisodium ethylenediamine disuccinate	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 Ahc if you want Vitamin B3 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

Focus on an effect

All ingredientsBrighten & fade dark spotsClear breakoutsSmooth fine linesHydrate & plumpCalm rednessRefine textureRepair & strengthenProtect from sunGo

All ingredients

Brighten & fade dark spotsClear breakoutsSmooth fine linesHydrate & plump

Calm rednessRefine textureRepair & strengthenProtect from sun

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