Quick Answer. According to The Free Dictionary, etiology, also spelled aetiology, is the study of exploration of the cause or factors contributing to something. In pathology, it specifically denotes the investigation into the cause or origins of a disease. Continue Reading.
Pellets deliver consistent, healthy levels of hormones for 3-4 months in. women and 4-5 months in men. They avoid the fluctuations, or ups. and downs, of hormone levels seen with every other method of delivery.
The lifespan of a closure depends on the quality of the hair and the cap construction. Well constructed closures can last as long as 3-5 years. Others have a lifespan of 3-12 months. Again the lifespan depends on many factors that contribute to the wear factor. (care, quality, etc..) Due to the delicate nature of the materials in which it is constructed from, lacefrontals may have a lifespan of 3-12 months depending on a variety of factors that contribute to the wear factor.