ATIKA Journal — The Science of Skin Longevity

Collagen & Hormones: Estrogen, Cortisol, Thyroid, Androgens

A clinical explanation of how estrogen, cortisol, thyroid hormones, and androgens influence collagen, dermal thickness, and skin structure—and where foundational skin nutrition fits.

What Is Collagen? A Plain-Language Guide for Skin

A clear, evidence-based explanation of what collagen is, where it sits in the skin, how its structure changes with age and UV exposure, and why type I and III collagen matter most for visible firmn...

Inside the Antioxidant Network: How ATIKA’s System Is Built

ATIKA Advanced Skin Nutrition isn’t built around a single “hero” antioxidant. It uses a coordinated network of carotenoids, polyphenols, vitamin C and mineral cofactors to support antioxidant defen...

Oxidative Stress, Skin, and Internal Antioxidant Support

Oxidative stress is one of the main drivers of collagen loss, barrier disruption and uneven tone in skin. This article explains how ROS are generated, why topical antioxidants can only reach part o...

Carotenoid Supplements for Skin: What Human Studies Actually Show

Carotenoids such as beta-carotene, lycopene, lutein, and zeaxanthin accumulate in the skin and influence how it responds to UV and oxidative stress. This overview summarizes what controlled human s...

How Do Internal Skin Nutrition and Topicals Work Together?

Internal skin nutrition and topical skincare work on different layers of the same organ. This article explains how each approach affects key pathways in the skin and how to combine them in a measur...

The Science of Micronutrients and Skin Aging: A Clinically Grounded Guide

A clear, clinically grounded look at how vitamins, minerals, carotenoids and lipids influence collagen, barrier lipids and antioxidant defenses — and how these micronutrients help shape the biology...

Collagen & Gut Health: Understanding the Gut–Skin Axis

Struggling with breakouts, dullness, or bloating? The gut–skin axis plays a major role. Learn how digestion, collagen metabolism, and inflammation interact — and why supporting gut health can stren...

Collagen Cofactors: Nutrients That Make Collagen Supplements Work

Discover how key vitamins and minerals — collagen cofactors — help your body activate collagen peptides, strengthen skin structure, and improve hydration and repair.

How Perimenopause Accelerates Collagen Loss: Skin Changes After 40

Hormone fluctuations in perimenopause can reduce collagen, alter barrier lipids, and change how skin responds to UV. This article explains the science behind these shifts and how targeted nutrition...