ATIKA Journal — The Science of Skin Longevity

How Long Do Antioxidants Take to Work for Skin? Realistic Timelines

Internal antioxidants don’t produce overnight changes. Human trials show distinct timelines: carotenoids and antioxidants rise within weeks, collagen and barrier changes emerge over 8–12 weeks, and...

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...

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...

What Causes Skin Aging at the Cellular Level?

A detailed, research-based explanation of how skin aging begins at the cellular level: fibroblast changes, collagen loss, ceramide decline, and oxidative stress. Includes clinical references and a ...

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.