Is it effective?
No, it is not effective. There are currently no validated studies to support its use.
Is it safe?
It may cause potential harm as virus and bacteria contaminating the menstrual blood can cause possible inflammation or aggravation of acne. It may even be more troublesome if it gets into your eyes.
Is it worth trying?
No, it is better to avoid this practice.
How about “vampire facials”? Some derma clinics offer this service wherein they draw blood from the patient, separate the plasma, and then reintroduce the blood/ plasma into the skin? Is there any risk? Is there any benefit?
“Vampire facials,” also known as platelet-rich plasma (PRP) injections, are hyped to stimulate the growth of new collagen to give skin a more youthful appearance. The use of PRP has been documented in other medical cases i.e. for wound healing, joint injuries, and arthritis-related pain.
Studies on its use on the face showed that autologous PRP treatment improved skin conditions, including increased skin thickness, enhanced collagen content, and reduced pigmentation.
Note that one of the potential risks is contracting blood-borne diseases such as HIV. This may be due to unsafe and unsanitary storage and handling of needles. Other injection site risks are irritation, swelling, and bruising.
In conclusion, are there any benefits of period blood facial? Potentially, but not medically supported.