What Your Skincare Tools Are Actually Made Of — and How to Care for Them
I keep three tools on the shelf beside my sink: a rose quartz gua sha I bought in Portland three years ago, a jade roller that belonged to my mother, and a small brush that came with a clay mask. Then a chip appeared on the corner of the gua sha, and I could not tell whether that stone was finished or simply wearing in. What follows is what I learned: the materials, how each piece is cut and finished, and the routine that keeps a tool usable. This is a piece about objects, not outcomes.
By the Voolga team · Updated November 6, 2026
Hardness, surface and weight decide how you care for a tool
Three properties decide how a tool should be handled: hardness, surface finish and weight. Hardness decides whether a stone chips or scratches; surface finish decides whether residue clings to it.
Hardness runs on the Mohs scale, where talc sits at 1 and diamond at 10. Most skincare stones land between 2.5 and 7, so a stone left loose beside a metal nail file can pick up a scratch. A stone dropped on a porcelain sink is a real risk; a silicone brush dropped there is not.
Surface finish is a manufacturing decision: 400 grit feels matte and catches product, 3000 grit feels glassy and releases it. Weight is underrated: a dense stone settles into your grip, a light one skitters.
Gua sha stones: jade, rose quartz and bian stone
Jade in skincare is usually nephrite, a tough amphibole mineral around 6 to 6.5 on the Mohs scale. It is dense and fine-grained, with a waxy luster. Nephrite takes a smooth edge and holds a steady temperature.
Rose quartz is quartz, about 7 on the Mohs scale, colored pink by trace minerals. It is harder than nephrite and takes a higher-gloss polish. A quartz edge holds its shape longer, though a chip runs further.
Bian stone (bian shi) is a metamorphic rock from Shandong province in China. It is denser and heavier than jade or quartz, and its surface reads matte to satin. Because bian is a rock rather than a single mineral, hardness varies across a piece.
From block to bathroom shelf
The sequence is always the same. A block is slabbed and the blank shaped on a wet grinding wheel, wet because dust and heat both matter. The edge is formed on a finer wheel and the flat face lapped against a steel plate with graded grit. A final hand polish on a felt pad decides matte or glassy. A comb edge, a spoon edge and a flat edge are three grinding profiles, and the profile decides how the stone feels.
How to clean a gua sha stone, step by step
Cleaning a gua sha stone takes about ninety seconds: lukewarm water, a drop of mild soap, a soft cloth, a dry towel.
- Wet the stone under lukewarm running water. Warm, not hot; hot water on a cold stone is the quickest way to crack it.
- Put one drop of mild soap in your palm. Fragrance-free hand soap or plain dish soap works; anything with grit does not.
- Work the soap over every face with your fingertips, including the notch and the edge. Residue collects in the concave side and between the comb teeth.
- Rinse under lukewarm water until the water runs free and no longer feels slippery.
- Shake off the water and dry the stone with a soft cloth. A stone left wet on the sink develops hard-water spots.
- Set it on a dry towel for fifteen minutes before putting it away.
Once a week is enough in regular use, and after every session if you use it over oil or a mask. The goal is to remove residue and dust, nothing more. If the ritual is what draws you in, our notes on gua sha as a practice of touch and stillness cover the slower side of it.
Facial rollers: the frame matters as much as the stone
A facial roller is two stones on a wire frame, and the frame is where most rollers fail. The stones are usually rose quartz or jade; the frame is brass, steel or plastic.
Jade roller care is mostly frame care. The stones are drilled through the center, where water sits. A cheap brass pin spots and rusts if it stays damp; a stainless pin does not. The gap between stone and frame is the second place water hides.
To clean one: lukewarm water, a drop of mild soap, and your fingers working along the stone and around the frame. Rinse. Dry the pin and the gap with the corner of a cloth, not just the stone's face, and lay the roller flat on a towel to air-dry. Do not store it in the shower.
Face mask brush cleaning: bristles first, handle second
Face mask brushes split by bristle. Synthetic bristles, usually taklon or polyester, are smooth and springy and hold their shape. Natural hair, whether goat, squirrel or sable, is softer and thirstier and mats if you dry it wrong. Silicone applicators have no bristles, just a flexible head.
The handle matters as much as the head. Wood and bamboo are open-grained, and water swells the grain until the finish lifts. A wooden brush is fine to use and annoying to keep, which is the trade.
Cleaning steps: lukewarm water, one drop of mild soap in your palm, bristles swirled through it. Keep the ferrule, the metal band holding the bristles, out of the water. Rinse until the water runs free, squeeze from ferrule to tip, reshape the head, and lay the brush flat to air-dry. Never stand it upright while wet. For silicone heads, rinse, soap, rinse, dry. For more on applicators and how much product a brush puts down, see our guide to sheet mask application techniques.
The materials, side by side
What each material is, how it feels, and the one thing to watch.
| Material | What it is | Feel | How to clean | Watch out for |
|---|---|---|---|---|
| Nephrite jade | Tough amphibole mineral, Mohs 6–6.5 | Dense, waxy luster | Lukewarm water, mild soap, air-dry | Scratches from stored metal |
| Rose quartz | Quartz, Mohs 7, trace minerals | Heavy, glassy polish | Same as jade; dry the drilled hole | Chips run further than jade's |
| Bian stone | Metamorphic rock, Shandong, China | Heaviest, matte to satin | Same as jade; pat dry, do not soak | Hardness varies across one piece |
| Stainless steel frame | Roller pin and arms | Cool, rigid, no give | Wipe, dry the joint, lay flat | Water in the stone-to-frame gap |
| Synthetic bristles | Taklon or polyester filament | Springy, smooth, holds shape | Soap in palm, swirl, squeeze, dry flat | Soap left to dry in the ferrule |
| Natural hair bristles | Goat, squirrel or sable hair | Softer, thirstier, mats when wet | Same steps, gentler squeeze | Drying upright or in a closed drawer |
| Wood or bamboo handle | Sealed timber | Light, warm, grainy | Wipe only, never soak | Water swelling the grain |
What not to do, in material terms
Most tool damage is not wear from use. It is the wrong kind of cleaning, applied once.
- Do not boil stone tools or put them in a dishwasher. Both are heat shock; stone does not enjoy a sudden 90°C bath.
- Do not soak stone in alcohol. Repeated soaking dulls a polished face and can leave stone chalky.
- Do not leave wood or bamboo wet; water swells the grain and lifts the finish.
- Do not move a stone from hot to cold quickly; a warm stone into cold water is the classic way to crack one.
- Do not use abrasive cleansers or a scouring pad. Grit scratches polish, and polish is why a stone glides.
Storage: a pouch, a dry shelf, away from the sun
Stone goes in a soft pouch or a lined drawer, not loose in a basket with hairpins and nail files. Keep stone out of direct sun on a windowsill; some pieces fade and all of them get hot.
Brushes stand bristles-up in a cup or lie flat in a drawer once fully dry. Rollers live flat on a shelf, not hanging from the frame, because hanging stresses the pin. Everything wants the same three conditions: dry, dark, not crowded against metal.
When a tool is worn and ready to retire
A stone is worn when its edge no longer glides. Run a thumbnail along it: a sound stone is uniformly smooth, a worn one catches or feels stepped. A chip smaller than a grain of rice can sometimes be smoothed with a fine emery board; anything larger changes the edge profile, so let the tool go. A crack through the body is the end, however small.
Signs elsewhere in the kit: a roller that squeaks or wobbles at the pin. A brush with bristles that splay or shed. Any of those mean replacement rather than mending.
What I do now
Sunday evening, before the week starts, the tools come off the shelf and get washed together. The rose quartz is the one I reach for first, and I prefer it to jade: the extra weight sits better in my hand and the glassy polish releases mask residue more easily when I rinse it. My jade gua sha is still here, demoted to paperweight, a respectable second career for a stone.
The brush stays in an open cup rather than a drawer, because a brush I cannot see is a brush I forget to wash. If you are rebuilding the shelf anyway, the full Voolga lineup shows what the tools sit beside, and the complete product collection covers the rest. For the disposable-versus-reusable question, our cloth and sheet mask comparison picks up where the drawer leaves off.
Questions I get asked about tool care
How often should you clean a gua sha? After every session if you use it over oil or a mask, once a week otherwise.
Can you put a jade roller in the fridge? You can. Let it come back to room temperature gradually.
How do you clean a face mask brush without ruining it? Soap in your palm, swirl the bristles, keep the ferrule dry, rinse well, squeeze from ferrule to tip, air-dry flat.
How do you know when to replace a gua sha stone? When the edge catches under a thumbnail, when a chip changes the profile, or when a crack runs through the body.
This article is for informational purposes about skincare products and ingredients. Voolga makes no claims about the health or medical effects of its products.
