Yes, baby shampoo can expire, although it might not always have a printed expiration date.
While many cosmetic products, including baby shampoo, aren't required to have expiration dates, they do degrade over time. A general guideline is that cosmetic products without explicit expiration dates are typically stable for about 3 years from the date of manufacture, provided they are stored properly at room temperature. Some manufacturers recommend replacing products annually to ensure you're receiving the best possible experience and efficacy.
Here's a breakdown:
- No Printed Expiration Date: If your baby shampoo doesn't have an expiration date printed on the bottle, assume it's good for roughly 3 years from the manufacturing date. Finding the manufacture date can sometimes be tricky. Look for a batch code or PAO (Period After Opening) symbol.
- Period After Opening (PAO) Symbol: Some baby shampoos feature a PAO symbol, which looks like an open jar with a number followed by "M" (e.g., "12M"). This indicates how many months the product is safe to use after you've opened it.
- Signs of Expiration: Even within the suggested timeframe, check for changes in:
- Color: Discoloration could indicate degradation.
- Smell: A change in odor could mean the product is no longer safe or effective.
- Consistency: Separation, thickening, or thinning can also be signs of spoilage.
- Storage Matters: Proper storage can extend the life of your baby shampoo. Keep it in a cool, dry place away from direct sunlight.
In summary, while baby shampoo may not always have a clearly marked expiration date, it does degrade over time. Follow the general guideline of 3 years from manufacture or the PAO symbol's instructions, and always be on the lookout for signs of spoilage.
