It is genetic - in my family there is no history of it as it is a recessive gene but my mum and dad were both carriers. In Scotland up to 13% of the population has red hair, but around 40% of the population is thought to carry the recessive gene responsible for the world's rarest natural hair colour.
On the other hand, synthetic base oil molecules are chemically controlled, which provides increased ï¬ lm strength and lubricity over petroleum oils. The performance qualities of base oils have a marked impact on the performance qualities of the ï¬ nished product.
Synthetic Oil vs Regular Oil. Synthetic oil and regular oil differ basically in terms of the base oil used in their production. Motor oil serves very important functions in the engine of any car. It keeps lubricated all moving parts of the engine and also protects them from wear and tear.