I do not recommend using Hansaplast Lion Heat Plaster on children under 12 without a pediatrician's approval because it contains a heat-producing chili extract that can irritate or burn young skin.

⚕️ What this likely means

• The plaster contains Capsicum annuum (chili) extract and generates heat; the product guidance says to leave on up to 8 hours and also to keep out of reach of children.
• Children's thinner, more sensitive skin increases the risk of strong irritation, blistering or superficial burns from heat patches.

🩺 Action steps

• Do not apply the plaster to a child under 12 unless a pediatrician explicitly advises it.
• If the patch was already applied, remove it immediately, wash the area with cool water, and avoid rubbing.
• For pain relief in children, use child-appropriate measures (cool compress, rest) and follow a pediatrician's advice before using topical heat products.

⚠️ Warning signs that need prompt care

• Spreading redness, blistering, severe pain, or any signs of infection (pus, increasing swelling).
• Persistent or worsening pain despite removing the plaster.
• Any breathing difficulty or facial swelling after exposure (possible severe allergic reaction).

If you want, I can summarize safer alternatives for children or provide wording to show a doctor. Consult a pediatrician for specific advice before using this product on a child.