Calcium Hydroxide

Calcium Hydroxide molecular structurePubChem

5+ year old children • Skin contact product

Check for Different Age (6 available)

Is this kid-friendly to use Calcium Hydroxide?

⚠️
USE WITH CAUTION
Danger Score: 4 (Lower is safer)
Quick Answer: Calcium Hydroxide use with caution for 5+ year old children when used in topical products. Kids may have different tolerance levels.

ℹ️General Overview

For children 5 years and older, calcium hydroxide can irritate the skin, eyes and breathing. When used at low levels in products made to avoid irritation it is usually okay, but it is not a gentle ingredient and needs care.

✅What to Do

Use only products that list calcium hydroxide and are labeled safe for children or for sensitive skin. Do a small patch test on the inside forearm and wait 24 hours before wider use. Do not put it near eyes, mouth, or nose. Avoid using it on cuts, scrapes, or any broken skin. Prefer products made specifically for kids or choose a formulation without this ingredient.

⚠️Warnings

Avoid products with calcium hydroxide in high or undiluted form and keep them away from your child’s eyes and face. If it gets in the eyes or causes strong stinging, flush with water and seek medical care. If your child develops redness, blistering, or breathing problems after exposure, stop use and see a healthcare provider. These cautions come from chemical hazard guides and cosmetic safety reviews and from regulatory limits that recommend concentration or use restrictions (examples: chemical hazard pocket guides, cosmetic safety panels and the cosmetics regulatory guidance used in the EU and industry reviews).

Confidence: MEDIUM

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Safety Risk Labels

This ingredient has the following documented risks:

Irritant: Authoritative safety guides list calcium hydroxide as an irritant to skin, eyes, and lungs. A chemical-hazards pocket guide classifies it as an eye/skin/lung irritant, a U.S. medical toxicology source reports evidence of skin irritation, and an industry safety panel says it can cause irritation unless used at limited concentrations. For a baby, that means this ingredient can cause redness, stinging, or rashes on delicate skin or damage if it gets in the eyes.
Asthma: Chemical-hazard guidance specifically calls out lung irritation from calcium hydroxide. Because it can irritate the lungs, it can make breathing problems or asthma worse in children if inhaled or if fine dust/aerosols reach the airways.
Banned: Regulatory sources for cosmetics show use and concentration limits for calcium hydroxide and recommend restrictions. The EU Cosmetics Directive / Cosing records restrictions and the industry review panel says it is only safe when formulated to avoid irritation. These rules mean some countries or product standards limit or prohibit its use in cosmetics.

Tap or hover over labels to see detailed risk information.

Alternative Names for Calcium Hydroxide

This ingredient may also be listed as:

limewatercalcium hydroxideCALCIUM HYDROXIDELIME WATERCALVITBIOCALCSUPER MICROSTARCALCIUM HYDROXIDE, PURISS., MEETS ANALYTICAL SPECIFICATION OF PH. EUR., USP, FCC, 95-100.5% (COMPLEXOMETRIC)CALCIUM HYDROXIDE, SAJ SPECIAL GRADE, >=96.0%CALCIUM HYDROXIDE, UNITED STATES PHARMACOPEIA (USP) REFERENCE STANDARDCALCIUM HYDROXIDE, VETEC(TM) REAGENT GRADE, 95%CALCIUM HYDROXIDE, 99.995% TRACE METALS BASISCALCIUM HYDROXIDE, PURISS. P.A., REAG. PH. EUR., >=96%

Always check ingredient labels carefully, as ingredients may be listed under different names.

Products Containing Calcium Hydroxide

This ingredient is found in the following products:

This list shows products that contain Calcium Hydroxide or its alternative names.

Common Questions About Calcium Hydroxide

Is this kid-friendly to use Calcium Hydroxide?

Use caution with Calcium Hydroxide for 5+ year old children. Some safety concerns have been identified.

What are the irritant risks of Calcium Hydroxide for children?

Can cause skin redness, itchiness, or rashes—especially on sensitive baby skin.

What are the asthma risks of Calcium Hydroxide for children?

Can make breathing issues like asthma worse in babies and kids.

What are the banned risks of Calcium Hydroxide for children?

Banned or heavily restricted in one or more countries.

What products contain Calcium Hydroxide?

Calcium Hydroxide is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.

When can kids start using products with Calcium Hydroxide?

The appropriate age depends on the specific ingredient properties and concentration. This analysis is for 5+ year old children. Use the age selector above to check other ages.

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