For infants (0-6 months), magnesium hydroxide is generally low risk when used in a product made for babies. However, babies have very delicate skin, so we are a little more careful than with adults.
Choose products specifically labeled for babies or newborns. Avoid any product that lists “nanopowder,” “nano,” or is a loose powder. Don’t put products with this ingredient near your baby’s eyes, mouth or on broken skin. Apply a small amount first and watch the area for redness, swelling, increased fussiness, or rash. If you see any of those signs, stop using the product and check with your pediatrician.
Some official reviews note limited evidence of skin, eye or breathing irritation (European Chemicals Agency). Industry safety panels say the ingredient is safe when formulas avoid irritation (Cosmetic Ingredient Review). Independent sources flag potential concerns if the ingredient is present as a nano-sized powder. Also, some product-verification programs require extra safety data before allowing this ingredient in verified baby products. Because of these findings, avoid powdered or nano forms and stop use if your baby shows irritation; consult your child’s doctor for persistent problems.
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This ingredient is found in the following products:
This list shows products that contain Magnesium Hydroxide or its alternative names.
Scientific research related to this ingredient:
These research articles provide scientific evidence about Magnesium Hydroxide safety and effects.
Yes, Magnesium Hydroxide is generally considered safe for 0-6 month old babies based on current research.
May harm organs like liver, kidneys, or lungs with repeated use. This is especially important for babies whose skin and systems are still developing.
Can cause skin redness, itchiness, or rashes—especially on sensitive baby skin. This is especially important for babies whose skin and systems are still developing.
Can be absorbed through the skin and get into the bloodstream. This is especially important for babies whose skin and systems are still developing.
Can make breathing issues like asthma worse in babies and kids. This is especially important for babies whose skin and systems are still developing.
Could weaken or confuse immune system. This is especially important for babies whose skin and systems are still developing.
Magnesium 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 0-6 month old babies. Use the age selector above to check other ages.
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