The nature and purpose of the study were fully explained to volunteers and written informed consent was obtained from all of them.
Twelve healthy female volunteers within the age of 38–64 years were chosen to participate in our study.
They are divided randomly into two groups; Group I: consisting of eight volunteers, received P407 gels loaded with ALA cubosomes (Treatment).
Group II: consisting of four volunteers, received P407 gels loaded with
cubosomes free from the drug (Placebo).