At 28N, we believe skincare claims should be supported by evidence. Our Research Library brings together independent in-vivo studies, ingredient science, formulation insights, and practical skincare education to help you understand not only what works—but why it works.

The Essence of 28 N: Where Science Meets Skincare

Molecular structure illustration representing skincare science and cosmetic formulation research

Can a Serum Be 97% Natural-Origin and Still Con...

At 28N, natural-origin percentages are calculated against ISO 16128 — and the remaining few percent are chosen with intention, not hidden. Natural-origin claims in skincare can sound simple. In reality,...

Can a Serum Be 97% Natural-Origin and Still Con...

At 28N, natural-origin percentages are calculated against ISO 16128 — and the remaining few percent are chosen with intention, not hidden. Natural-origin claims in skincare can sound simple. In reality,...

Real Skin, Real Results: The Brightening Serum that Actually Does the Work

Real Skin, Real Results: The Brightening Serum ...

Discover the independent 28-day in-vivo study behind our B⁶ Brightening Formula and see how it improved skin brightness while reducing the appearance of pigmentation and visible redness.

Real Skin, Real Results: The Brightening Serum ...

Discover the independent 28-day in-vivo study behind our B⁶ Brightening Formula and see how it improved skin brightness while reducing the appearance of pigmentation and visible redness.

What Happens When You Actually Test an Anti-Aging Serum? We Did - Here's the data

What Happens When You Actually Test an Anti-Agi...

Discover the independent 28-day in-vivo study behind our A⁶ Anti-Ageing Formula and see how it helped improve the appearance of wrinkles, skin radiance and overall skin texture—alone and paired with...

What Happens When You Actually Test an Anti-Agi...

Discover the independent 28-day in-vivo study behind our A⁶ Anti-Ageing Formula and see how it helped improve the appearance of wrinkles, skin radiance and overall skin texture—alone and paired with...