由 species 於 2024-04-09 19:45:48 發表 | 累積瀏覽 132
A common misconception is expired makeup is safe to use, but this isn't always the case. Risks are associated with using expired makeup including, clogged pores and bacterial growth. It's important to be mindful of how long your makeup has been in storage so you can avoid these potential health hazards.
The majority of toner products that I'm aware of, and I have several have just about the same shelf-life as most of the other skin care products, which is 12 months. You also want to avoid using an expired toner because it can really irritate your skin.初學者化妝步驟
PAO = Period After Opening
So, a [12M" with an open jar symbol means you should throw the product out 12 months after you've opened it. This is commonly known as the Period After Opening (PAO) date.
Over time, those preservatives break down and lead to bacterial or fungal overgrowth, especially if you store your products in a moist, warm bathroom. But even without any breakouts or rashes, you just won't be getting the true benefits of your vitamin C serum or retinol if you're using it after the expiration date.
Although your Vitamin C serum will lose its efficacy once oxidized, the product does not become harmful to the skin until it's expiration date, approximately one year after manufacturing. For best results, we recommend using your Vitamin C serum within 3 to 6 month of purchase, when it is fresh and most effective.
But if you're digging out last year's lightweight moisturizer, check the expiration date. Most opened products lose their effectiveness after one year and some even sooner, according to cosmetic chemist Ni'Kita Wilson. Expired products may not only lack potency, but could also cause an adverse skin reaction.
You shouldn't. Expired sunscreen actually means that the product will no longer protect you and it increases your potential for sunburns, sun damage and skin cancer. [If you're using expired sunscreen, you're essentially just putting on a regular moisturizer and aren't getting any sort of UV protection," says Dr. Vij.
Over time, those preservatives break down and lead to bacterial or fungal overgrowth, especially if you store your products in a moist, warm bathroom. But even without any breakouts or rashes, you just won't be getting the true benefits of your vitamin C serum or retinol if you're using it after the expiration date.護膚品過期可以用嗎
Most face cleansers last upto one year. But if there are any lumps or discolouration in the cleanser, you need to throw it immediately. An expired cleanser is still useable but it will be less effective.
Retinol does help clear acne, but it's not a quick fix. It may take weeks or even a few months for your skin to improve.