If the quantity is negligible, can wait and watch for vomiting, abdominal pain etc. If appreciable amount , take to the nearest hospital immediately.

If a 3-year-old child has ingested Rin detergent, it's considered a household chemical ingestion, and prompt action is needed. Here’s what to do: Immediate Steps (First Aid): Do NOT induce vomiting. Detergents are irritants and vomiting can cause more damage to the esophagus. Rinse mouth with clean water. Wipe out any visible detergent from the mouth gently. Give small sips of water or milk. This may help dilute the detergent and reduce irritation. Do not give large amounts. Check for symptoms: Drooling Difficulty swallowing Vomiting Coughing or wheezing Breathing difficulty Burns around the mouth Next Step: Immediate Medical Evaluation Take the child to the nearest hospital or pediatric clinic immediately, even if the child seems fine. The detergent may cause esophageal or gastric injury that’s not immediately visible. In the Hospital: The doctor may perform: Observation and monitoring IV fluids if needed ENT or GI referral if signs of corrosive injury Endoscopy (within 24 hours) if symptomatic What NOT to Do: Do not give activated charcoal (ineffective for detergents). Do not force vomiting. Do not delay medical care.

Kindly consult once physically to nearby pediatrician

Just watch for repeated vomiting and gastritis. If quantity is less, nothing to worry as such. Give lot of fluids..