While it may seem like a creative and resourceful idea to use expired makeup as art supplies, it's important to consider a few factors.

Firstly, the pigments used in makeup are designed for cosmetic use and may not have the same properties as those in art supplies. For example, they may not be as vibrant or long-lasting when applied to paper or canvas.

Secondly, expired makeup can harbor bacteria, which can be transferred onto your art supplies and potentially contaminate them. This is particularly true for liquid or cream-based products, such as mascara or foundation.

Lastly, certain makeup products contain ingredients that can be harmful if inhaled or ingested, such as talc in powders or certain preservatives. These risks may increase when the makeup is old and expired.

Therefore, while it might be tempting to use expired makeup as art supplies, it's generally safer and more effective to use products specifically designed for this purpose.