ATIKA Journal - Foundational Supplement for Skin Longevity

How Long Do Internal Antioxidant Supplements Take to Affect Skin?

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...

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...

Antioxidant Supplements for Skin: Do They Actually Work?

Antioxidant supplements reach deeper skin layers through circulation and influence UV-induced redness, oxidative markers, tone, and hydration. This article reviews what controlled human studies act...

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 Internal and Topical Skincare 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: How the Gut–Skin Axis Affects Hydration and Elasticity

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...