Health topic
Skin Health & Conditions
What the clinical evidence actually says about supplements, nutrients and light-based therapies for acne, inflammation and everyday skin health — with the caveats spelled out rather than glossed over.
Where nutrition meets skin — and where the evidence stops
Skin is a living, metabolically active organ, so it is reasonable to ask whether what we take internally can change how it behaves. For a handful of nutrients the biological rationale is genuinely plausible: zinc, vitamin A and omega-3 fatty acids all touch pathways involved in inflammation, sebum and skin-cell turnover that matter in conditions like acne.
Plausible, however, is not the same as proven. Most human trials in this area are small, short and use product-specific formulas, which makes it hard to say that a single nutrient caused an improvement. That is why the reviews collected here treat supplements and diet as possible supporting measures — not replacements for the standard dermatological treatments that carry the strongest evidence.
Our approach is deliberately conservative. Each article explains the mechanism, weighs the human studies honestly, states realistic doses and safety limits, and is clear about when a reader should prioritise proven care or speak to a clinician. The goal is to help you make an informed decision, not to sell a cure.
Browse the skin-health library
Every review below is evidence-graded. Jump in by focus, or refine by supplement type, goal, evidence strength and common concerns.
Skin articles
Reviews and guides on supplements, diet and therapies for skin.
Acne, Inflammation & Nutrition: Do Supplements Help?
A science-led guide to acne, diet, and supplements, covering low-glycemic eating, probiotics, zinc, vitamin D, and when nutrition should support—not replace—dermatology care.
Blue-Light Therapy for Acne: Evidence, Benefits and Limits
Blue-light therapy may help some mild-to-moderate inflammatory acne, but the evidence is mixed. Learn how it works, what studies show, and when to use it.
Can Vitamin B5 Help Acne? Evidence, Forms and Safety
Vitamin B5 has a plausible link to acne, but evidence is limited. Learn what pantothenic acid may do, what studies show, and key safety cautions.
Green Tea for Acne: Evidence, Forms and Safety
Green tea may modestly help inflammatory acne when used topically. Oral extracts are less reliable and require more caution, especially at higher catechin doses.
Omega-3 for Acne: Benefits, Evidence, Forms and Safety
Omega-3 may help inflammatory acne, but evidence remains limited. This article compares EPA, DHA, fish oil, and algae oil, and reviews dosing, safety, and current guideline caution.
Red-Light Therapy for Acne: Evidence and Mechanisms
Red-light therapy for acne is biologically plausible, but evidence is mixed. The article explains how it may work, what studies show, and why guidelines remain cautious.
Selenium for Acne and Skin Inflammation: Benefits, Risks, and What the Evidence Says
This article reviews whether selenium may help acne or inflammatory skin conditions, covering biological rationale, limited human evidence, dosing, and the risks of excessive intake.
Sun Exposure and Acne: Helpful or Harmful?
Sun may make acne look calmer briefly, but UV can worsen post-acne marks, skin aging, sunburn, and skin-cancer risk. The article explains why sunlight is not an evidence-based acne treatment.
The Acne Diet: Foods That Can Help Calm Breakouts
A science-led guide to acne-supportive eating, focused on low-glycemic meals, milk reduction, omega-3-rich foods, and realistic diet changes that may help calm breakouts.
Vitamin A for Acne: Which Forms Actually Help?
Vitamin A is linked to acne treatment, but retinoid medicines are the proven option. The article explains which forms help, how they work, and the main safety risks.
Vitamin D for Acne: Evidence, Forms and Safety
Vitamin D may modestly help inflammatory acne in people with low vitamin D, but evidence remains limited and it should not replace standard acne treatments.
Zinc for Acne: Evidence, Forms and Safety
Zinc for acne may help some inflammatory breakouts, but evidence is mixed. Learn the best-studied forms, dosing clues and safety cautions.