Rosehip oil

The French give a different name for the oil extracted from the plant Rosa Rubiginosa (RR) "Huile de rose musquée" and the one from Rosa Canina (RC) "Huile d'églantier" but the English do not differentiate them.
The plants are twin sisters. Rosa canina is also called dog-rose, Rosa rubiginosa is also called Rosa Eglanteria or Rosa Mosqueta both come from the wild rose family (rosaceae caninae).
The Rosa rubiginosa oil is predominately grown in Chile and the Rosa canina oil is produced in Europe and in Lesotho (South Africa), both oils have similar properties.
Rosehip oil has been used for hundreds of years and even more and it has become a sought after product around the globe making it more expensive. The most widely used and produced oil is Rosa canina.
The oils are extracted from the seeds of the plant. 
I have a personal preference for Rosa canina oil has it is produced in Europe.

Composition

​Both oils are very rich in vitamin C, vitamins A, E and K
The rosehip seed is made of 77% fatty acids.  The oils contain a large quantity of essential fatty acids (omega-3 linoleic acid and omega-6 linolenic acid). The oil also contains polyunsaturated fatty acids (vitamin F) involved in cellular membrane and tissue regeneration. 
Both oils have a high level of bioactive compounds, a high level of antioxidants and antimicrobial action. Their antioxidant activity is due to their content in polyphenols, vitamins C, E, B and carotenoids and these compounds may have synergistic effects.
Retinol is naturally present in rosehip seeds. Rosehip oil also contains trans-retinoic acid (a form of vitamin A, commonly marketed under the name Tretinoin). It also contains lycopene one of the most powerful antioxidants.

Properties

Rosehip oil is used all around the globe widely for its healing capacities, anti-aging, and antioxidants, anti-inflammatory, regenerative, it helps reduce scars, and gives the skin a healthy glow.

Benefits

​The oil extracted from the rosehip plant has excellent tissue regeneration properties and reparation of damaged skins. It helps reduce scars (trauma or surgical) and prevent the formation of keloid scar tissue. It repairs skin subjected to excessive sunlight and is helpful in healing burns, scars and stretch marks.
The linoleic and linolenic acid in rosehip has also shown to reduce pigmentation of the skin and when used on the long tern it has been shown to reduce fine lines and wrinkles.
It can be used on all skin types but is ideal for mature, irritated, and damage skins.
The vitamin E content (alpha tocopherol) as well as the flavonoids gives an antioxidant power that slows the signs of premature aging.

Uses

​For the skin -
​It can be applied locally twice a day
It has good synergy with Helichrysum Italicum essential oil, lavender, rosemary and sage officinalis for sunburns and scar treatment.
For stretch marks it works well with tangerine essential oil.

For the face -
The oil can be used as a cure alone or combined with a day or night cream.
It will moisturize the dry areas of the skin while not adding moisture to oilier areas.
The oil is quite thick but has a good penetration power meaning it absorbs quickly without leaving an oily skin residue.
However I advise wetting your hands before applying the oil to the face, massaging gently for added comfort.
​Rosehip oil has a amber to orange color and a natural nutty smell. It is recommended to make it completely penetrate the skin to avoid staining clothes or bed sheets.  

​Rosehip oil is delicate and can easily go rancid, so it’s important to take great care of it. Vitamin E oil can be added to improve shelf life. Keeping it in the refrigerator or stored in a cool, dark location can help prevent rancidity.
it is important to choose a cold pressed organic oil

References:
Les huiles végétales c'est malin de Julien Kaibeck
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3668991/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5485961/

HV - huile végétale
VO - vegetal oil