Versus

Principia Serum Facial AH-2 Versus The Ordinary Retinol 0.5% in Squalane

Serum
Serum
Brazilian Brand
Canadian Brand

Updated on March 04, 2025

Overview

What they are

These products are both vegan, cruelty-free, and reef safe serums. They have a total of 0 ingredients in common

Suited For

They're both likely to be good for dry skin, brightening skin and scar healing

Free From

They both do not contain any harsh alcohols, common allergens, fragrances, parabens, silicones or sulfates

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

Ingredient Info

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What's inside (and what isn't)

What's inside (and what isn't)

At a glance

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Benefits

Key Ingredients

Benefits

Concerns

When to use

27 Routines
52% use in am
48% use in pm
93% use every day
When to use See routines that use it ->
807 Routines
6% use in am
94% use in pm
68% use every day
When to use See routines that use it ->

Reviews

Here's what our community thinks

Principia Serum Facial AH-2 13 ingredients

5.00
Overall rating
5
4
3
2
1
What people say
Absorbs Well 100% Great Value 100% Hydrating 100%
3.17
Overall rating
5
4
3
2
1
What people say
Oily 67% Great Value 50% No Scent 50%