Pollution and Skin

What it is

Pollution and skin is a significant but often overlooked link when it comes to skin ageing and damage. Tiny particles from polluted air can penetrate the skin, causing oxidative stress, inflammation, and even breakouts. Over time, this contributes to premature ageing, uneven skin tone and weakened skin barrier function.

How it works in skincare

To combat pollution, use antioxidant-rich skincare products such as vitamin C or niacinamide, which neutralise free radicals. Double cleansing at night removes pollutant particles, and applying SPF daily protects against environmental aggressors.

Peptides

What they are

Peptides are short chains of amino acids that serve as building blocks for proteins such as collagen and elastin. In skincare, peptides are synthetically created to mimic those naturally found in the body, ensuring stability and efficacy.

How they work in skincare

In dermatology, peptides are used in anti-ageing serums and creams to stimulate collagen production and improve skin elasticity. They are often paired with other active ingredients such as hyaluronic acid to enhance their effectiveness.

The benefits of peptides include reduced fine lines, improved skin firmness, and enhanced hydration. They support the skin’s repair process, making them ideal for mature or damaged skin. Peptides are gentle and well-tolerated, making them a popular choice for those seeking a youthful glow.

Polyglutamic Acid

What it is

Polyglutamic acid (PGA) is a powerful humectant derived from fermented soybeans. It’s a naturally occurring peptide made up of glutamic acid units and is most well known for its impressive water-binding abilities. While it’s newer to the skincare scene than hyaluronic acid, it’s gaining popularity for its ability to deeply hydrate and improve skin texture.

How it works in skincare

Polyglutamic acid works by attracting and holding onto moisture, helping the skin retain water and stay hydrated for longer. It forms a breathable, protective film on the skin’s surface, which not only helps prevent water loss (also known as transepidermal water loss or TEWL) but also enhances the skin’s natural barrier function. Some research suggests PGA can hold up to four times more moisture than hyaluronic acid, making it an especially effective ingredient for boosting hydration.

In addition to its hydrating properties, polyglutamic acid can help improve skin elasticity, smooth the appearance of fine lines and leave the skin feeling soft and plump. It’s suitable for most skin types, including sensitive skin and works well in both standalone hydrating serums and multi-ingredient formulas.

PGA is often layered alongside other moisturising ingredients such as hyaluronic acid, glycerin and ceramides. It sits well under sunscreen and makeup and because it works mainly at the surface level, it complements ingredients that penetrate deeper into the skin. Its film-forming ability may also help other actives stay on the skin longer, potentially increasing their effectiveness.

How to use it

To use polyglutamic acid effectively, apply it to slightly damp skin after cleansing and before moisturiser. It can be used daily, morning or night and generally plays well with most other ingredients. Those with dry, dehydrated or compromised skin barriers may notice particular benefits from regular use.

Pollution and Skin

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