While there is no widely recognized "verified" official guide specifically under the name "Lilu Julia,"
The single most useful safety rule for baby oil massage:
Before applying any oil (including baby oil) to a baby’s skin, perform a patch test 24 hours in advance. Apply a small drop to a small area of the baby's inner arm or behind the knee. If no redness, rash, or irritation appears by the next day, the oil is likely safe for that baby. Additionally, never use baby oil on a baby’s face (can cause milia or aspiration if it drips) or on their hands if they are at an age where they suck their fingers (ingestion risk). lilu julia baby oil massage verified
Tummy (1–2 minutes) — for digestion
Better Sleep: Gentle stimulation helps reduce stress hormones, calming the baby for a more restful sleep. While there is no widely recognized "verified" official