Mummies, at what age do you let your lo use normal bolster instead of those beanspruts pillow or bolster?

Hi, My daughter is six and she still doesn't use any pillow or bolster. I always was little reluctant to use pillow for her because I had read that when a toddler sleeps on a pillow, he is at a higher risk of Sudden Infant Death Syndrome (SIDS). I think one should not use pillow for the baby until he/she is over one year old.