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Paula's Choice 10% N… vs Sunday Riley A+ High… — Which Is Better? | Gracie

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Paula's Choice 10% Niacinamide Booster vs Sunday Riley A+ High-Dose Retinoid Serum

Paula's Choice 10% Niacinamide Booster scores 8.3/9.8 vs Sunday Riley A+ High-Dose Retinoid Serum at 8.0/9.8. Paula's Choice 10% Niacinamide Booster wins for active ingredients.

Head to head

Paula's Choice

10% Niacinamide Booster

serummid-range

8.3

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Ingredients

Niacinamide
Retinol
Hyaluronic Acid
Salicylic Acid

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Honest skincare intel. No jargon, no gatekeeping — just the ingredients decoded.

Sunday Riley

A+ High-Dose Retinoid Serum

serumpremium

8.0

Score comparison

Paula's Choice 10% Niacinamide Booster edges ahead, winning 1 of 5 attributes.

Paula's Choice wins 1

Tied 4

Sunday Riley wins 0

8.3Paula's Choice

+0.3vs

8.0Sunday Riley

Scores last verified: April 2026

Attribute battle

Hydration Efficacy

TIE

7.7

7.5

Paula's Choice

Sunday Riley

Irritation Risk

TIE

9.5

Paula's Choice

Sunday Riley

Active Ingredient Strength

Paula's Choice WINS

6.7

5.3

Paula's Choice

Sunday Riley

Ingredient Transparency

TIE

8.8

Paula's Choice

Sunday Riley

Formulation Safety

TIE

9.0

Paula's Choice

Sunday Riley

Ingredient face-off

9% overlap

22Paula's Choice

4Shared

44Sunday Riley

Only in Paula's Choice 10% Niacinamide Booster

18 unique

Aqua Niacinamide Acetyl Glucosamine Ascorbyl Glucoside Butylene Glycol Bis-Peg-18 Methyl Ether Dimethyl Silane Methyl Gluceth-20 Allantoin Glycyrrhiza Glabra (Licorice) Root Extract Beta-Glucan+8 more

Shared ingredients

4 in common

Glycerin Pentylene Glycol Ubiquinone Phenoxyethanol

Only in Sunday Riley A+ High-Dose Retinoid Serum

40 unique

Water Propanediol Dimethyl Isosorbide Dimethicone Hexyldecanol Cetyl Peg/Ppg-10/1 Dimethicone Diheptyl Succinate Propylene Carbonate Phenyl Trimethicone Retinol+30 more

Why Paula's Choice 10% Niacinamide Booster comes out ahead

Where Paula's Choice 10% Niacinamide Booster really shines is active ingredient strength, scoring 6.7 compared to Sunday Riley A+ High-Dose Retinoid Serum's 5.3. Its formula features Niacinamide, Acetyl Glucosamine, and Ascorbyl Glucoside in high positions, signalling meaningful concentrations.

Paula's Choice 10% Niacinamide Booster brings Niacinamide, Acetyl Glucosamine, and Ascorbyl Glucoside as actives, while sunday Riley A+ High-Dose Retinoid Serum relies on Retinol, Ubiquinone, and Honey Extract. Both approaches have merit, but the positioning and supporting ingredients make the difference.

Best for your skin type

Paula's Choice 10% Niacinamide Booster is better if you have

Sensitive skin — the low-irritation formula keeps things gentle
Dry or dehydrated skin that craves moisture, thanks to Butylene Glycol
Anyone who prefers clean, well-vetted formulations

Sunday Riley A+ High-Dose Retinoid Serum is better if you have

Sensitive skin — the low-irritation formula keeps things gentle
Dry or dehydrated skin that craves moisture, thanks to Dimethyl Isosorbide
Anyone who prefers clean, well-vetted formulations

Value comparison

At mid-range pricing with a score of 8.3, Paula's Choice 10% Niacinamide Booster delivers strong value. Sunday Riley A+ High-Dose Retinoid Serum sits at the premium level with a 8.0 score — the extra cost doesn't translate to better scores here.

Our verdict

✶ Our verdict

+0.3 lead

Paula's Choice 10% Niacinamide Booster edges ahead with a slightly stronger formulation, but Sunday Riley A+ High-Dose Retinoid Serum is still a solid pick.

8.3Paula's Choice

8.0Sunday Riley

Frequently asked questions

Which is better: Paula's Choice 10% Niacinamide Booster or Sunday Riley A+ High-Dose Retinoid Serum?

Based on ingredient analysis, Paula's Choice 10% Niacinamide Booster scores higher overall. See the full score breakdown above for details on each attribute.

Do Paula's Choice 10% Niacinamide Booster and Sunday Riley A+ High-Dose Retinoid Serum share ingredients?

Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.

What's the main difference between Paula's Choice 10% Niacinamide Booster and Sunday Riley A+ High-Dose Retinoid Serum?

The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.

Full analysis: Paula's Choice 10% Niacinamide Booster→Full analysis: Sunday Riley A+ High-Dose Retinoid Serum→

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