Peter Thomas Roth

Potent-C Niacinamide Discoloration Treatment

4.70 (37)

Fragrance Free
Mineral
Paraben Free
Sulfate Free

Ingredient safety

Colors come from public regulatory sources. Every color has a word next to it.

42 ingredients on the label

35Low hazard
0Not enough data
7Moderate hazard
0High hazard

What reviewers said

Counted across 37 reviews

Liked

brightening13
gentle4
no irritation3

Not so much

No common complaints in these reviews.

Counted from shoppers' reviews on a retail site, not from our own users. These are shoppers' observations, not results from a clinical trial.

PERBETE reviews

From people who use PERBETE. Each review shows its own stars.

Ingredient groups

Tap a row to see which ingredients it counted.

Worth a look

High hazard (7-10)0

Not enough data yet0

Fragrance allergens the EU asks brands to label0

May help

UV protection0

Only on PERBETE

Rules differ from country to country0

A stronger form of this exists0

Clinical evidence

Being in the list and working are two different things. This is where we split them.

What the ingredients are for

Emulsifier6
Skin conditioning4
Emollient4
Humectant4
Other3
Preservative3
Solvent2
Cleansing agent2

Having these ingredients does not guarantee the product delivers the benefit.

By skin type

Every ingredient

Nothing is filtered out and nothing is hidden here.

1AquaLow hazard
2NiacinamideLow hazard
3Dimethyl IsosorbideLow hazard
4Isononyl IsononanoateLow hazard
5Tranexamic acidLow hazard
6Dimethicone (polydimethylsiloxane)DimethiconeLow hazard
7Caprylic/Capric TriglycerideLow hazard
8alpha-ArbutinModerate hazard
9Cetyl AlcoholLow hazard
10Glyceryl StearateLow hazard
11Pentylene GlycolLow hazard
12PropanediolLow hazard
13C9-12 AlkaneLow hazard
14Citric acidListed below the 1% lineLow hazard
15Glyceryl Stearate SEListed below the 1% lineLow hazard
16Butyrospermum Parkii ButterListed below the 1% lineLow hazard
17Tetrahexyldecyl ascorbateListed below the 1% lineLow hazard
18Kojic acidListed below the 1% lineModerate hazard
19trans-ResveratrolResveratrolListed below the 1% lineLow hazard
20Tocopheryl acetateListed below the 1% lineLow hazard
21DIETHYLHEXYL SYRINGYLIDENEMALONATEListed below the 1% lineLow hazard
22HYDRANGEA ARBORESCENS ROOT EXTRACTListed below the 1% lineLow hazard
23MORUS ALBA ROOT EXTRACTListed below the 1% lineLow hazard
24SCUTELLARIA LATERIFLORA EXTRACTListed below the 1% lineLow hazard
25HYDROLYZED VEGETABLE PROTEINListed below the 1% lineLow hazard
26SilicaListed below the 1% lineLow hazard
27Sodium Stearoyl GlutamateListed below the 1% lineLow hazard
28Coco-Caprylate/CaprateListed below the 1% lineLow hazard
29DimethiconolListed below the 1% lineLow hazard
30GlycerolGlycerinListed below the 1% lineLow hazard
31Sodium PhytateListed below the 1% lineLow hazard
32Potassium SorbateListed below the 1% lineModerate hazard
33Sodium BenzoateListed below the 1% lineModerate hazard
34Caprylyl GlycolListed below the 1% lineLow hazard
35Hexylene GlycolListed below the 1% lineLow hazard
36Polysorbate 20Listed below the 1% lineModerate hazard
37CETETH-20Listed below the 1% lineLow hazard
38Steareth-20Listed below the 1% lineLow hazard
39Polyacrylate Crosspolymer-6Listed below the 1% lineLow hazard
40PEG-75 STEARATEListed below the 1% lineLow hazard
41Titanium Dioxide CI 77891Listed below the 1% lineIARC Group 2B · inhalation exposureModerate hazard
42PhenoxyethanolListed below the 1% lineModerate hazard

How to use

Apply twice daily to clean skin in the AM and PM, with continued use. If mild irritation occurs, use every other day until skin adjusts. Gradually build to daily use. Follow with moisturizer and use SPF protection during the day.

Red does not mean poison. Preservatives that stop a product going off, UV filters and fragrance can land on yellow or red depending on their score.

Green does not mean right for you. Skin and allergies differ from person to person. Treat the color as a starting point.