Cosmetics Formulation Development

The ingredients we bought There will be an expiration date for quality assurance 06/2018 and the last line saying please use up before 06/2017. The product bought from the web month 4/2017. I want to know if it's expired to mix yet. I'm confused. Can it still be used? or have to leave

Hello, the expiration date will be stated in 2 lines on the product. 1. Quality Assurance expiration date. or the expiration date of the substance: this expiration date is the expiration date of quality assurance. of the manufacturer. Usually, the manufacturer guarantees that the substance sold will not be altered in any unusual way. For example, the color changes beyond the specified value. change of smell There is spoilage/deterioration. In practice, the substance will be older than this expiration date quite a lot, but the team still recommends that members use it within this expiration date. 2. Packaging expiration date: This expiration date is set to inform Let the user know the age of the package. This is because smaller packages below 1kg are not designed to keep the raw material for a long time. Which is often opened and closed, the seal of the envelope may deteriorate. and not completely closed as before This can shorten the life of the substance. In this case, if you take good care of the packaging, including storing the substance in the specified environment [for example, in the refrigerator or in the room, away from light and heat], the actual shelf life of the substance will be reduced. It will not be lower than the age in (1) above. Always check the condition of the packaging. if found to be in bad condition but want to keep the substance for a long time please pack in a container that can store substances better