The wonders of Rosehip oil

I am collating literature about rosehip oil as I am going to use it in my products and the more I look for scientific literature the more I realize that it is a fantastic ingredient. In a  2 year study done in 1988 rosehip oil was applied to 180 people with surgical, traumatic and burn scars, with remarkable results. According to another research done on 20 women between 25 and 35 presenting signs of UV damage, it is also effective in repairing UV damage. Rosehip oil was applied for 4 months while wrinkles and age spots were monitored and at the end of the test, skin was smoother and age spots were almost disappeared. The actives contributing to these repairing properties are unsaturated fatty acids (up to 80% linoleic and linolenic acids) and trans retinoic acid, a derivative of vitamin A, Tretinoin. I looked for the content of Tretinoin in Rosehip oil and found no information. If any of you knows more about it and would like to contribute to the post, please come forward!