For preschoolers (2–5 years), calcium hydroxide is not usually listed as highly dangerous, but it can cause stinging, redness, or irritation of skin, eyes, or breathing when there is contact. Because of that, it is treated cautiously in products for young children.
Avoid deliberate use of products that list calcium hydroxide on young children's skin, especially on the face or near the eyes. If a product with this ingredient must be used, choose one made and labeled for children, do a small patch test on the arm and wait 24 hours, keep it away from broken or sore skin, and keep all such products out of reach of children. If the child gets it in their eyes, rinse gently with water for several minutes and seek medical care if irritation continues. If skin becomes red, blistered, or the child has trouble breathing, stop use and seek medical help.
This ingredient is classified in chemical safety references as an eye, skin, and lung irritant (source: Pocket Guide to Chemical Hazards). There is also limited evidence of skin irritation reported in medical literature (source: US National Library of Medicine). Regulatory lists and cosmetic safety reviews recommend use or concentration limits and sometimes restrict use in cosmetics (sources: EU Cosmetics Directive / Cosing and Cosmetic Ingredient Review). Watch for stinging, redness, coughing, or eye pain and follow the first-aid steps above; these warnings come from the cited safety and regulatory reviews.
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This ingredient may also be listed as:
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This ingredient is found in the following products:
This list shows products that contain Calcium Hydroxide or its alternative names.
Use caution with Calcium Hydroxide for 2-5 year old children. Some safety concerns have been identified.
Can cause skin redness, itchiness, or rashes—especially on sensitive baby skin. Young children may be more sensitive to these effects.
Can make breathing issues like asthma worse in babies and kids. Young children may be more sensitive to these effects.
Banned or heavily restricted in one or more countries. Young children may be more sensitive to these effects.
Calcium Hydroxide is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.
The appropriate age depends on the specific ingredient properties and concentration. This analysis is for 2-5 year old children. Use the age selector above to check other ages.
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