ATIKA Journal — The Science of Skin Longevity

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...

Astaxanthin for Skin: What Human Clinical Studies Show

Astaxanthin is one of the few antioxidant ingredients with controlled human data in skin. This article reviews how oral astaxanthin supplements affect elasticity, wrinkles, hydration and UV-induced...

Internal vs Topical Antioxidants for Skin: What Each Can and Can’t Do

Topical antioxidants defend the skin’s surface, while internal antioxidant supplements support deeper layers and systemic oxidative stress. This guide explains how both fit together using evidence ...

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...

Ceramides vs Hyaluronic Acid: Which Actually Repairs the Skin Barrier?

Ceramides and hyaluronic acid aren’t interchangeable. Hyaluronic acid pulls water in; ceramides keep it from escaping. Understanding that difference is key to long-term hydration and barrier repair.

Collagen and Inflammation: How Immune Signaling Shapes Skin Structure

A clear explanation of how inflammation influences collagen synthesis, matrix breakdown, and visible skin aging — and how these pathways connect across ATIKA’s skin longevity framework.

How to Repair Your Skin Barrier (And How Long It Really Takes)

If your skin stings, feels tight, flakes, or reacts to products that used to be fine, your skin barrier may be damaged. This article explains how to recognize skin barrier damage, what actually rep...

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...

Vitamin and Nutrient Deficiencies That Can Affect Skin

Vitamin and nutrient gaps can show up on skin as dryness, fragility, dullness, or slow recovery. This guide explains which deficiencies are most commonly linked to skin changes, what is not diagnos...