These cannabis-based products are prescribed to treat skin conditions such as psoriasis, acne, burns, bruises, to reduce swelling, for pain and inflammation, insect bites and stings, sprains.
Studies show that particle size is incredibly important for transdermal transportation of topical molecules. Topicals with a particle size of 500 nanometers (nm) or more cannot penetrate the stratum corneum. Once the particle gets down to about 80 nm it is able to diffuse into the epidermis. Hence, classic emulsions are prescribed for conditions that lie on the surface such as psoriasis, eczema, acne, burns, insect bites and stings.
Nanoemulsions are a relatively new form of product and have been found to be an effective method of transdermal delivery. Nanoemulsions reduce the droplet size of the medium (varying from 10 to 100 nm) to improve permeability through the skin and hence are prescribed by doctors for conditions beneath the skin such as inflammation, bruises, sprains and aches/pains.
Sprays are a preferred option for some doctors for particular patients. Some sprays are prescribed to be used topically in place of creams and others are prescribed as an alternative oral dosing method to oils/tinctures.