Thank you for your query on Healthcare Magic.
I advise you to take him to emergency for the examination of the child and to assess the ingestion and to look for any abnormal signs of aspiration of the lotion into lungs.
Don't induce vomitings at home.
If there is no lungs involvement, child can be observed for further vomitings and can be treated with supportive medication
Keep chemicals, drugs out of reach for children as they are very curious and they try to keep everything into mouth.
Hope I have answered your query.