A lot of exfoliants out there go too hard—especially the ones packed with microplastics or jagged pit particles that can scratch up your skin. At Cult of Reason, we do things differently.
Grit Sulfur Cleansing Scrub by Cult of Reason is made with finely milled pumice powder—a renewable, volcanic ingredient that’s tough on buildup but gentle on skin. Let’s break down why pumice powder is a smart, skin-safe, and eco-conscious choice for exfoliation.
What Is Pumice Powder? (Hint: It’s Not a Rock in a Jar)
When people hear “pumice,” they think of a chunky foot stone. But in skincare, pumice powder is something else entirely.
It starts with volcanic lava, which cools quickly and traps gas bubbles, forming a porous, lightweight material called pumice. This natural material is then ground into a superfine powder—not a rough crunchy rock—making it safe for facial exfoliation and body use alike.
How Pumice Powder Exfoliates Skin (Without Damaging It)
Unlike harsh scrubs that can cause microtears in the skin, pumice powder works on a mechanical exfoliation level—but with finesse. The particles are rounded and lightweight, meaning they help lift away dead skin cells and surface debris without stripping your barrier or triggering irritation.
That makes it ideal for people who want a physical exfoliant that feels like it’s doing something, without wrecking their skin’s balance.
Grit's intensity can easily be adjusted by adding a little water to your hands to thin out the paste, offering customizable exfoliation depending on your skin's sensitivity and needs.
Better Together: Pumice + Jojoba Esters
In our Grit Sulfur Cleansing Scrub, we combine volcanic pumice powder with jojoba esters—another natural exfoliator made from jojoba oil. This combination allows for a multi-textured exfoliation experience that targets dry patches, clogged pores, and rough texture without overdoing it.
The result? Smoother, clearer skin that doesn’t feel tight, raw, or overworked.
No Microplastics, No Problem
Here’s the bonus: Pumice powder is 100% natural, renewable, and biodegradable. Unlike many conventional exfoliating scrubs that contain microbeads or microplastics (which don’t break down and pollute waterways), pumice is clean, safe, and eco-friendly.
If you’re into sustainable skincare products that don’t compromise on performance, this ingredient deserves a spot in your routine.
Try It in Grit Sulfur Cleansing Scrub
We formulated our sulfur exfoliating scrub with pumice powder for a reason: it works. And it aligns with everything Cult of Reason stands for—effective, pragmatic, barrier-safe skincare rooted in the real world (and, in this case, volcanic earth).
Use it 1–5 times a week to gently resurface skin, boost glow, and support a healthy skin turnover cycle—without the fluff or the damage. If you're particularly sensitive or dry, use Grit once every two weeks to help keep your products absorbing effectively.
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