But collagen isn't just for healing boo-boos. It also plays an important role in how skin ages. Gordon explains that collagen is the support structure that gives our skin a firm, young appearance. When levels remain plentiful, our skin looks young and fresh. When levels decline, we lose that support and wrinkles begin to form.
The value of a used car can be difficult to estimate because many factors, such as year, make, model, condition and upgrades can all affect how much itâs worth. The Black Book is a car valuation guide that can be used to help determine the value of used cars. History The Black Book was established in 1955 by three businessmen in Gainesville, Georgia, who regularly attended auto auctions.
Find the car's book value. The first step in assessing a used vehiÂ­cleâs true worth is to check its book value. This is the figure youâll find in pricing guides and used-car pricing websites, which lists a vehicleâs base retail value.ind the car's book value. The first step in assessing a used vehiÂ­cleâs true worth is to check its book value. This is the figure youâll find in pricing guides and used-car pricing websites, which lists a vehicleâs base retail value.