The awareness of the environmental impacts of human activity has led to the adoption of several initiatives to promote more sustainable development. Producing and consuming, while minimizing impacts on the environment is one approach to reduce environmental degradation. Pressure from governments and consumers leads companies to introduce environmental constraints among the criteria to take into account in their activities. As product is at the heart of their activities, attention is focused on it since its design phase and this for its entire life cycle. This new approach consists to consider the environmental constraints the same way as other constraints related to cost, quality and delay at the design stage. This process, known as eco-design, attracts the attention of both industry and academia. Many tools and methods have been proposed to allow the deployment of this new approach. In this paper, we reviewed the impact of eco-design, and proposed approaches to help companies to realize more important saving.