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.
Most children will need a booster seat until they have reached 4 feet 9 inches tall and are between 8 and 12 years old If you need help to find the correct seat that fits your child then visit us at http://www.babycarseatsinfo.com