FAQ

Bamboo Charcoal Minerals work with your skin’s natural renewal cycle, helping to restore balance and keep it healthy. They’re perfect for anyone looking to improve their skin condition, but especially loved by those with sensitive skin, delicate skin that reacts easily to cosmetics, or troubled skin prone to breakouts and irritation. Even during seasonal changes, when your complexion feels unstable, our formula helps keep your skin calm and clear. And because it’s so gentle, it’s a great choice for men as well.

After exposure to the summer sun, it’s best to focus on lotion-based care.
(Recommended balance: 2 parts lotion to 1 part moisturizing milk.)
In the dry winter months, use more moisturizing milk. Especially before bed, apply it generously,even on the lips, and you’ll notice the difference the next morning.

Minerals extracted from bamboo charcoal are plant-derived. Unlike the more common mineral-based ingredients that come from ores, plant-derived minerals are more easily absorbed by the skin. They help support skin metabolism and care for the stratum corneum.
The name Bambina means “baby” in Italian—because our products help restore the kind of healthy, natural skin you had before you ever needed foundation.

We recommend using the product within about one year after purchase, and within six months after opening.
For storage, please avoid high or low temperatures, humidity, and direct sunlight. We also advise against using the product after it has been opened and left unused for a long period of time.

Not at all. Even after using a weakly alkaline product, the skin naturally returns to its weakly acidic state. Mineral based cleansers are also more biodegradable compared to synthetic cleansers, making them gentler on the environment. In fact, many Japanese hot springs are neutral to weakly alkaline. These alkaline elements help soften excess oils and old keratin on the skin’s surface, making them easier to remove. This is why bathing in a hot spring leaves the skin feeling smooth and helps promote a healthy outer skin.

Many people assume that “foaming = full of chemicals,” but our bamboo-charcoal detergent is different. We use a simple formula based on bamboo-charcoal minerals and pure soap ingredients, without synthetic surfactants, fluorescent agents, or fabric softeners.

Soap ingredients are generally considered highly biodegradable because they are easily broken down by microorganisms. In fact, recent studies have shown that natural soaps outperform synthetic detergents in terms of both biodegradability and lower toxicity in water.

Bamboo-charcoal minerals are inorganic and act by loosening and lifting dirt. They support cleaning without adding organic chemicals that would place a greater burden on the environment.

In other words, “foam” and “eco-friendliness” are not contradictory. When used properly—with the right concentration and thorough rinsing—our detergent provides strong cleaning power while remaining gentle on the environment.

Except during the hot summer months, you can store it at room temperature (up to about 30°C). Since lactic acid bacteria are more active at room temperature than in the refrigerator, we recommend room-temperature storage whenever possible.

Remove the air from the bag and store it in the refrigerator. If the rice bran has become watery, please take care of the excess moisture first (by adding fresh rice bran or absorbing the liquid with kitchen paper) before refrigerating. For unopened products as well, we recommend keeping them in the refrigerator if you will not be using them for an extended period.

If you leave it watery for too long, the bran may weaken and the flavor may decline. However, that doesn’t mean it can’t be used. By adding our special bamboo rice bran refill (tashi-nuka), you can restore the balance and continue using it for a long time.