• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

Each beauty formula has a usable lifespan, whether it’s a emollient, concentrated treatment, cleanser, or sunscreen. Knowing how long your products remain effective and safe to use is vital to avoid adverse reactions and avoiding skin irritation or infection. Following initial use, skincare products start losing effectiveness due to oxidation, UV radiation, and خرید محصولات تراست microbial contamination. Even if the product looks and smells fine, its bioavailable compounds may have become inactive.

The majority of containers display a marker on the packaging that resembles a jar with an open lid and "M". This denotes the period in months and reveals the timeframe for optimal use post-opening. For example, 12M means it’s good for 12 months after opening. Certain potent formulas such as vitamin C serums or retinoid creams are prone to rapid breakdown when exposed to oxygen and UV rays and may only last 3 to 6 months after opening. Their therapeutic value declines swiftly, so it’s vital to incorporate them into your routine without delay.

Unopened products generally last longer, often up to two years, occasionally three, depending on the ingredients. However, always check the expiration date printed on the packaging. In the absence of a label, it’s recommended to consider three years as the upper limit for unused formulas. The countdown begins immediately regardless of usage intensity.

Signs that your skincare product has gone bad include changes in color, texture, or smell. Should a cream turn gritty, a serum turns yellow or cloudy, or the fragrance turns sour or unpleasant, it’s time to discard it. Expired skincare risks triggering acne, flares, or serious skin infections, notably on thin or reactive epidermis.

To preserve the integrity of your formulations, store them in a cool, dry place away from direct sunlight and humidity. Never leave them in steamy environments, where condensation and heat promote bacterial growth. Always use clean hands or a spatula to remove product from jars, which contaminates the formula.

Regularly cleaning out your skincare collection every few months can help you avoid using outdated items. Maintain a digital or physical log of when you first used each item if there’s no date printed. Err on the side of caution and replace it. Your skin deserves fresh, effective products that deliver the results you’re paying for. Choosing fresh products is not optional—it’s essential for your skin’s well-being.