Barth Neutral Bicarbonate Bath Tablets 30 - Japanese carbonated spa bath tablets for tired skin

BARTH Medicated Neutral Bicarbonate Bath Tablets 30 Tablets

$31.05
$31.05
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Barth Neutral Bicarbonate Bath Tablets 30 - Japanese carbonated spa bath tablets for tired skin
BARTH Medicated Neutral Bicarbonate Bath Tablets 30 Tablets
BARTH

BARTH Medicated Neutral Bicarbonate Bath Tablets 30 Tablets

$31.05
$31.05
In stock
  • ✅ Warms body to the core even in lukewarm water
  • ✅ Bicarbonate ions stay dissolved longer than rivals
  • ✅ Supports fatigue recovery, stiff shoulders & cold sensitivity
  • ✅ Prepares body for deeper, more restful sleep
  • ✅ Gentle enough to rinse face and scalp in bath water
  • ✅ Free from fragrance, colorants, and harsh additives

🛡️ 100% Authentic – Japan domestic version
🚚 Ships from Tokyo
✨ Fresh stock
🛍️ Same product sold in Japanese beauty stores

Description

BARTH Medicated Neutral Bicarbonate Bath Tablets turn an ordinary bath into a carbonated spring soak that warms the body from the inside out. Drawing on the rare neutral bicarbonate spring water of Bad Nauheim, Germany, this Japan-domestic formula uses proprietary technology to keep bicarbonate ions dissolved in the water far longer than conventional fizzy bath salts — so the therapeutic warmth builds steadily as you soak.

The active ingredient is neutral bicarbonate (sodium bicarbonate + sodium carbonate), which promotes circulation and raises core body temperature even in lukewarm water. This makes BARTH particularly effective before sleep: the gradual warming activates the parasympathetic nervous system, easing the body into rest. Fragrance-free and colorant-free, it is also gentle enough to use as a face wash rinse with the bath water.

Each pack contains 30 tablets — 10 full baths at 3 tablets per use. The compact size makes it an ideal first purchase for those stepping up from the 9-tablet trial pack.

Key Ingredients
  • Sodium Bicarbonate — active ingredient that generates bicarbonate ions to promote circulation and core warming
  • Sodium Carbonate — works with sodium bicarbonate to maintain neutral pH and sustain ion concentration in the water
  • Citric Acid — reacts with bicarbonates to release gentle effervescence and stabilise the formula
  • Vitamin C (Sodium Ascorbyl Sulfate) — neutralises chlorine in tap water and adds a mild skin-conditioning benefit

HOW TO USE
  1. Fill bathtub with lukewarm water (37–40°C, approx. 160L).
  2. Drop in 3 BARTH tablets and wait until fully dissolved.
  3. Soak for at least 15 minutes. Gently massage body and scalp while soaking.
  4. Use the bath water to rinse your face for an added skin benefit.
  5. Pro tip: Soak 60–90 minutes before bedtime for the deepest sleep effect — the body cools naturally after the bath, triggering sleep onset.

FAQ

How is BARTH different from regular fizzy bath salts?

Most carbonated bath salts are acidic, which causes bicarbonate ions to evaporate quickly as CO2 gas. BARTH's neutral pH formula keeps the bicarbonate ions dissolved in the water for much longer, meaning more ions are in contact with your skin throughout the soak.

Can I use it if I have sensitive skin?

Yes. BARTH contains no fragrance, no colorants, and no sulfur. The formula is gentle enough to use on the scalp and face. If you have a skin condition, consult a dermatologist before use.

How many tablets do I use per bath?

3 tablets per bath (for approx. 160L of water). This 30-tablet pack provides 10 full baths. Do not use with other bath additives.

Is this the Japan-domestic version?

Yes. This is the Japan-domestic 医薬部外品 (quasi-drug) formula sourced directly from Matsumotokiyoshi in Japan. TokyoShelf only carries products purchased in Japan, not export or reformulated versions.

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