# Why I’m Using Polyglutamic Acid to Hydrate My Dry Skin This Fall

> Polyglutamic acid: a new skincare hero for dry skin this fall.
- Title: Why I’m Using Polyglutamic Acid to Hydrate My Dry Skin This…
- Summary: Polyglutamic acid: a new skincare hero for dry skin this fall. Polyglutamic acid hydrates skin better than hyaluronic acid by attracting more water without…
- Keywords: polyglutamic acid, hyaluronic acid, hydration, dermatologist, skincare, dry skin, fall skincare, humectant, Using, Polyglutamic, Acid, Hydrate
- Source: Cosmopolitan — https://cosmopolitan.com/style-beauty/beauty/a73877952/what-is-polyglutamic-acid-skincare-ingredient
- Author: Catharine Malzahn
- Published: 2026-09-28T19:42:40+00:00
- Read time: 1 min
- Topics: polyglutamic acid, hyaluronic acid, hydration, dermatologist, skincare, dry skin, fall skincare, humectant
## What is polyglutamic acid?
Polyglutamic acid is a humectant that attracts and holds water at the skin's surface to replenish dry skin.

> it helps attract and hold water at the skin’s surface
## How does it work?
It forms a flexible protective film on the skin’s surface, making skin feel softer and smoother while reducing fine lines.

> it forms a flexible, protective film on the skin’s surface
## Why is it better than hyaluronic acid?
It holds up to four to five times more moisture than hyaluronic acid without penetrating deeply into the skin.

> it is a powerful humectant capable of holding up to four to five times more moisture than hyaluronic acid
## Who should use it?
Dry, dehydrated, and mature skin users benefit most, as it is gentle and non-comedogenic for sensitive skin.

> it tends to be well-suited to dry, dehydrated, and mature skin
## Can it be used with other products?
Yes, it works well with retinol and vitamin C products without causing irritation.

> it plays well with those potentially irritating ingredients like retinol and vitamin C
## What does it feel like?
It leaves a dewy, smooth finish that reduces tightness and makes skin look plumper.

> that can translate into skin that feels softer, smoother, and less tight
## Which products have it?
Serums, moisturizers, masks, and hydrating products contain polyglutamic acid for better hydration.

> you’ll find humectants like PGA in skin care products that are meant to be moisturizing
## How to apply?
Apply after cleansing and before moisturizer for serums, or after any serums and toners for moisturizers.

> if you’re using a serum, you’ll want to apply it after cleansing and before moisturizer
## Who shouldn’t use it?
People with very oily skin or humid climates may find it feels heavy or sticky on the skin.

> some may find the film it leaves behind feels heavy or sticky, particularly on very oily skin
## Why is it popular now?
As fall approaches, dry skin needs extra hydration, making polyglutamic acid a practical solution.
## What do dermatologists say?
Dermatologists recommend using polyglutamic acid alongside hyaluronic acid for the best hydration results.

> using both together gives the ultimate hydration experience
## What’s next?
This fall, polyglutamic acid will help dry skin stay hydrated without irritation.
## Key takeaway

Polyglutamic acid hydrates skin better than hyaluronic acid by attracting more water without penetrating deeply.