Will blue splat hair dye harm the baby while being pregnant?

While there is limited research on the effects of hair dye during pregnancy, most experts consider it generally safe to use semi-permanent or temporary hair dyes, like blue splat, in small amounts. However, it's best to avoid dyeing hair in the first trimester when the baby's organs are developing. To minimize any potential risks, ensure good ventilation, and consider consulting with a healthcare provider for personalized advice.