Deciem products last anywhere from 2-6 months, depending on the product.

Deciem is headquartered in London, UK.

The Ordinary niacinamide will last up to 6 months after opening.

The Ordinary ships within 2-3 business days.

There is no harm in using expired niacinamide, as long as it is stored in a cool, dry place and used within a year. However, expired niacinamide may not be effective and could cause adverse effects.

DECIEM is no longer owned by any specific company.

DECIEM stands for the “Delivering Excellence in Education through Innovation and Mentorship”. DECIEM is a non-profit organization that focuses on improving education by providing resources and support to educators.

The Ordinary was cancelled due to a number of factors including poor sales, high staff turnover, and the founders’ personal commitments.

Yes, you can put niacinamide in the fridge. However, it is important to note that it will become less effective as a skin-care ingredient over time if stored in the fridge.

A serum will last anywhere from 2-4 weeks, depending on the product.

A serum should last around 3-6 months, depending on how often you use it.