NEWKEY SKIN SCIENCE JOURNAL

Clinical Insights & Skincare Science

Articles on LED phototherapy, red & blue light science, and evidence-based skincare routines. Grounded in our FDA 510(k) clearance data.

Can You Use HSA or FSA Funds for an LED Light Therapy Mask?

FEATURED

Buying Guide·Sep 14, 2026

Can You Use HSA or FSA Funds for an LED Light Therapy Mask?

The deciding factor is not the device — it is why you are buying it and whether you can document it. How the IRS rule works, what an LMN must contain, and which indications qualify.

DEC

Dr. Emily Chen

Clinical Research Lead

7 min readRead

Buying Guide

Sep 14, 2026· 7 min read

Can You Use HSA or FSA Funds for an LED Light Therapy Mask?

The deciding factor is not the device — it is why you are buying it and whether you can document it. How the IRS rule works, what an LMN must contain, and which indications qualify.

DEC

Dr. Emily Chen

Retinol and Red Light Therapy: Can You Use Them Together?

Skincare Guide

Sep 14, 2026· 7 min read

Retinol and Red Light Therapy: Can You Use Them Together?

They can work together — but not in any order, and not at any frequency. What each one asks of your skin, the one sequencing rule that matters, and how to tell purging from irritation.

DEC

Dr. Emily Chen

LED Mask vs LED Panel: Which Should You Actually Buy?

Buying Guide

Sep 14, 2026· 6 min read

LED Mask vs LED Panel: Which Should You Actually Buy?

One sits on your face, one sits across the room — and that single difference decides everything. An honest comparison, including the cases where a panel is the right purchase.

DEC

Dr. Emily Chen

Recommended Device

4D LED Red Light Therapy Mask

Experience the same FDA-cleared red + blue light technology discussed in our articles. 510(k)-cleared (K230351), corded for consistent power, with visible improvement expected over weeks of consistent use.

4.9 from verified customer reviews

Shop Now — $199.99

Is Red Light Therapy Safe for Your Eyes? What Actually Matters

Safety & Science

Sep 14, 2026· 6 min read

Is Red Light Therapy Safe for Your Eyes? What Actually Matters

LED is not a laser, and blue light is not red light. What the real eye-safety considerations are, which medications change the calculation, and the three habits that cover the rest.

DEC

Dr. Emily Chen

How to Choose an LED Face Mask: 6 Specs That Matter

Buying Guide

Sep 14, 2026· 9 min read

How to Choose an LED Face Mask: 6 Specs That Matter

Devices at $60 and $600 make the same promises. Six specifications separate real engineering from a logo — plus four features you can safely ignore.

DEC

Dr. Emily Chen

LED Face Mask Wavelengths: What Each Nanometer Actually Does

Buying Guide

Sep 14, 2026· 8 min read

LED Face Mask Wavelengths: What Each Nanometer Actually Does

Colour names are marketing; nanometers are physics. A plain-English guide to what 415nm, 630nm and 850nm each do, how deep they reach, and how to read a spec sheet in 30 seconds.

DEC

Dr. Emily Chen