---
product_id: 749868785
title: "FreeMascot OD 4+ 190nm-540nm Wavelength Laser Safety Glasses for Typical 405nm, 450nm, 520nm, 532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red)"
brand: "freemascot"
price: "$37.40"
currency: USD
in_stock: true
reviews_count: 5
category: "Free Mascot"
url: https://www.desertcart.us/products/749868785-freemascot-od-4-190nm-540nm-wavelength-laser-safety-glasses-typical
store_origin: US
region: United States of America
---

# 190-540nm wavelength range 30% visible light transmittance OD 4+ optical density FreeMascot OD 4+ 190nm-540nm Wavelength Laser Safety Glasses for Typical 405nm, 450nm, 520nm, 532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red)

**Brand:** freemascot
**Price:** $37.40
**Availability:** ✅ In Stock

## Summary

> 🛡️ See safety in a new light — protect your vision, own the room.

## Quick Answers

- **What is this?** FreeMascot OD 4+ 190nm-540nm Wavelength Laser Safety Glasses for Typical 405nm, 450nm, 520nm, 532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red) by freemascot
- **How much does it cost?** $37.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/749868785-freemascot-od-4-190nm-540nm-wavelength-laser-safety-glasses-typical)

## Best For

- freemascot enthusiasts

## Why This Product

- Trusted freemascot brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Comfort Meets Style:** Lightweight, sleek design with included case and cleaning cloth for on-the-go professionals.
- • **ANSI Z87.1 Certified Safety:** Meets rigorous industrial standards for reliable, professional-grade eye protection.
- • **Broad Spectrum Laser Defense:** Protects eyes from violet to green lasers (190-540nm) with precision filtering.
- • **Enhanced Red Beam Visibility:** Optimized to enhance red laser beams even in daylight for superior clarity.
- • **Maximum Optical Density OD 4+:** Blocks intense laser exposure ensuring top-tier eye safety during treatments.

## Overview

FreeMascot OD 4+ Laser Safety Glasses deliver professional-grade eye protection across a broad 190-540nm wavelength range, featuring an optical density of 4+ to block harmful laser exposure. With 30% visible light transmittance and ANSI Z87.1 certification, these goggles combine cutting-edge safety with comfort and style, ideal for laser treatments and industrial use.

## Description

Wavelength: 190nm-540nm; Optical density: OD 4+ ; Visible light transmittance: 30% ; Safety glasses for violet, blue and green laser exposure. Enhance red beam laser. ANSI Z87.1 approved. Delicate and cool appearance. Comfortable to wear. Absorption type full protection for your eyes.

Review: So my body's schedule is perfectly fine when I am backpacking and outside 24 hours a day in beautiful summer weather. However, if it's an overcast day, my delay is 2-3 hours, for a 26-27 hour cycle. If I'm sleeping in a room without a real direct-light window, my delay is 5 hours, for a 29 hour cycle. I have had narcolepsy and a severely delayed circadian rhythm my entire life if my light exposure is not completely synced to the equivalent of full outdoor sun. People without this problem will make suggestions like "just go for a 15 minute walk outside every morning". No, I literally need continuous full outdoor sun THE ENTIRE DAY in order to not fall asleep midday. As you can imagine, this is very bad for work. I thought my night light exposure was fine because I have already switched over all my bedroom lights to dim orange/amber lights and have blue filters on my computer and phone, but it turns out that these red goggles do even better. They filter ambient street light, fridge lights, not-so-orange common space lights, and other random lights I might accidentally see walking around the house in the evening that I don't think about. These red goggles solved half of my problem. When I start wearing them 2+ hours before my target bedtime, I actually feel sleepy by my target bedtime, even if it's before midnight. Game changer and much better filtering and wraparound than standard blue-blocker glasses for only $10! Pure blue lights are completely invisible through these glasses, it looks like nothing is on. For the other half of the problem -- simulating full sunlight on days when it's either overcast, or I need to work indoors -- I read OptimizeYourBiology sun lamp reviews and ended up buying the Luminette 3 (~$200) and Alaska Northern Lights Mini Pad (~$200). I balked at the prices at first, but they have proven to be a very good deal considering they are giving me back several hours a day every day that I would usually spend struggling with my severe sleep disorder. I can finally cosplay as a normal person, at least where being awake is concerned. FYI, you'll get much better customer service if you buy directly through their websites rather than through desertcart.
Review: These glasses really block a lot of blue light and a small portion of the rest of the spectrum. Decent build quality and very good coverage of the face. These make excellent night time blue blockers and are priced reasonably.

## Features

- Wavelength: 190nm-540nm
- Optical density: OD 4+; Visible light transmittance: 30%, Enhance Red Beam Laser at daylight
- ANSI Z87.1 approved.
- Compatible with 405nm, 445nm,450nm, 520nm, 532nm laser light
- Packing List: Goggles with Case and Clean Cloth

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B0BYC25H5W |
| Best Sellers Rank | #166,606 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,602 in Eye Protection Equipment |
| Customer reviews | 4.5 4.5 out of 5 stars (173) |
| Date First Available  | 21 April 2025 |
| Department  | unisex-adult |
| Item model number  | PTHSS9 |
| Manufacturer  | FreeMascot |
| Product Dimensions  | 15.75 x 14.22 x 5.59 cm; 100 g |

## Images

![FreeMascot OD 4+ 190nm-540nm Wavelength Laser Safety Glasses for Typical 405nm, 450nm, 520nm, 532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red) - Image 1](https://m.media-amazon.com/images/I/51Pn5bAyOrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***G on 12 June 2025*

So my body's schedule is perfectly fine when I am backpacking and outside 24 hours a day in beautiful summer weather. However, if it's an overcast day, my delay is 2-3 hours, for a 26-27 hour cycle. If I'm sleeping in a room without a real direct-light window, my delay is 5 hours, for a 29 hour cycle. I have had narcolepsy and a severely delayed circadian rhythm my entire life if my light exposure is not completely synced to the equivalent of full outdoor sun. People without this problem will make suggestions like "just go for a 15 minute walk outside every morning". No, I literally need continuous full outdoor sun THE ENTIRE DAY in order to not fall asleep midday. As you can imagine, this is very bad for work. I thought my night light exposure was fine because I have already switched over all my bedroom lights to dim orange/amber lights and have blue filters on my computer and phone, but it turns out that these red goggles do even better. They filter ambient street light, fridge lights, not-so-orange common space lights, and other random lights I might accidentally see walking around the house in the evening that I don't think about. These red goggles solved half of my problem. When I start wearing them 2+ hours before my target bedtime, I actually feel sleepy by my target bedtime, even if it's before midnight. Game changer and much better filtering and wraparound than standard blue-blocker glasses for only $10! Pure blue lights are completely invisible through these glasses, it looks like nothing is on. For the other half of the problem -- simulating full sunlight on days when it's either overcast, or I need to work indoors -- I read OptimizeYourBiology sun lamp reviews and ended up buying the Luminette 3 (~$200) and Alaska Northern Lights Mini Pad (~$200). I balked at the prices at first, but they have proven to be a very good deal considering they are giving me back several hours a day every day that I would usually spend struggling with my severe sleep disorder. I can finally cosplay as a normal person, at least where being awake is concerned. FYI, you'll get much better customer service if you buy directly through their websites rather than through Amazon.

### ⭐⭐⭐⭐⭐ Review
*by S***T on 25 October 2025*

These glasses really block a lot of blue light and a small portion of the rest of the spectrum. Decent build quality and very good coverage of the face. These make excellent night time blue blockers and are priced reasonably.

### ⭐⭐⭐⭐⭐ Review
*by M***C on 2 September 2025*

Works great. Easy to use and fits right over your own glasses if you wear glasses.

## Frequently Bought Together

- FreeMascot OD 4+ 190nm-540nm Wavelength Laser Safety Glasses for Typical 405nm, 450nm, 520nm, 532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red)
- FreeMascot IPL 200nm-2000nm Laser Safety Glasses for Laser Hair Removal Treatment and Laser Cosmetology Operator Eye Protection with Case (Green)
- FreeMascot OD 4+ 190nm-550nm Wavelength Laser Safety Glasses for Typical 405nm, 445nm, 450nm,520nm,532nm Laser Light for Hair Removal Laser Treatment Eye Protection Goggles (Red)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-24*