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Hygiene and Sanitation · Formula · Book recipe 9.7

Baking soda bath for itchy, irritated skin

When irritation covers large areas of skin, spot treatments are not practical.

Member articleHandle with careWorks without power

How it works

Fill tub
Add soda
Soak
Skin relief

Inside this article

What you'll need
Steps
Warnings
Storage and shelf life

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What is in this article

  • The method at a glance: fill tub, then add soda, then soak, then skin relief
  • The exact numbers: bath dose, water, soak, frequency, sunburn
  • The full materials list (4 items, with grades and substitutes)
  • The 3-step method, with every measurement in the step
  • The hazard box and the caution notes: what never to mix it with and when to stop
  • Storage and shelf life for the raw compound and the finished mix
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Prefer paper? This is Recipe 9.7, page 47, in Prepper's Chemical Survival Guide.

Questions this answers

Tap a question for the short answer.

How much baking soda do I put in a bath?

The amount scales with the water: a partial soak in a basin takes less than a full bathtub. Stir it in until fully dissolved, and colloidal oatmeal can be added for itch-heavy irritation.

Members get the exact amounts and every step.

How do I make a baking soda bath for itchy skin?

Dissolve baking soda in a tub of comfortable water and soak, which cools and calms itching across the whole skin surface at once. The soak is alkaline and can dry skin, so moisturize afterward.

Members get the exact amounts and every step.

How long should I soak in a baking soda bath?

Keep the soak fairly short and repeat it daily while the irritation lasts. Moisturize afterward since the alkaline water dries skin, and step carefully because baking soda makes the tub slippery.

Members get the exact amounts and every step.

Can I use a baking soda bath for bug bites or rashes?

Yes. A full-body soak calms itching over the whole skin surface at once, which makes it practical for widespread insect bites, heat rash, poison ivy, or sunburn where spot treatments are not realistic.

Members get the exact amounts and every step.

Can I take a baking soda bath with broken skin?

No. Keep it off open wounds, severe burns, and broken skin, and stop right away if swelling, redness, or burning develops.

Members get the exact amounts and every step.

Keep going

Read nextHygiene and Sanitation When the Water Is OffWhat to do when the water goes off: bucket toilet, hand washing, waste, body, teeth, laundry, dishes, disinfecting, and pests, with the shelf item and recipe page for every job.Hygiene and Sanitation · Guide

Related to this

Medical · Formula Baking soda paste, compress and soak for itching, rashes and bites Bites, stings, and contact rashes flare and itch for hours, and a baking soda paste is a reliable kitchen substitute when antihistamine cream runs out. Handle with care Medical · Formula Sunburn relief with baking soda (compress or soak) Compress: 1-2 tablespoons baking soda in 1 cup cool water, 10-20 minutes Handle with care Compounds and Cleaning · Compound Baking Soda Shelf life: Indefinite. Storage: Sealed HDPE or glass. INDEFINITEMULTI-USE Medical · Guide Baking soda for body care (pH, muscles, teeth, odor) Antacid use: 1/4 teaspoon of baking soda dissolved in 8 ounces of water, short term only
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Hygiene and Sanitation · FormulaSource: Prepper's Chemical Survival Guide, Recipe 9.7, p. 47 · Last reviewed 2026-09-18

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