When dealing with a headache, try boiling one cup of apple cider vinegar and one cup of water in a pot. Pour into a heat proof bowl and put on the table or other safe place that you can lean over the bowl and cover your head with a towel. Inhale the steam for a few minutes to bring some relief.
The warning on mine says not to use prior to 4 months of age. My son was in his Jolly Jumper from 3 months. The directions of use are that if they can confidently hold up their head then they are fine.
How old do you have to be to skydive? In the US, jumpers must be 18 years or older - NO EXCEPTIONS! Minimum age requirements are due to the fact that minors are not able to sign legal documents and parents and/or legal guardians are not allowed by law to sign the rights of a minor away.