Each glass heart will give you at least three steams.
Benefits of steaming : 
- Reduced pain and bloating around menstruation
- Decreased menstrual flow
- Regulates menstrual cycle, or helps to bring back an absent cycle
- Increased fertility
- Heals and tones the reproductive system after giving birth
- Reduces uterine fibroids, ovarian cysts, uterine weakness, uterine prolapse and endometriosis
- Emotional healing from past pain and trauma
I HIGHLY recommend avoiding tap water. Tap water could cause infections as it is full of chemicals such as fluoride, sulfates, and chlorines. 
20 minutes is a safe time to steam. Any time longer than 30 minutes will not be beneficial for you.
STOP HERE!!! CAUTION: 
- Steam is HOT! Don’t burn the sensitive skin of your vagina.
- Do not steam during any stage of pregnancy Do NOT steam if you are pregnant or even if you think you might be pregnant. If you are actively trying to conceive, do not steam after ovulation during the luteal (2nd half) of your cycle.
- Do NOT use essential oils for vaginal steams.
- Do NOT steam if cancer is present anywhere in the body.
- IUDs. There’s much debate about whether women with IUDs should steam or not. The main concern is that the medicinal herbs could cause the uterus to contract, which could potentially cause problems with the placement of the IUD. That being said, some people with IUDs still steam and find it to be beneficial. Talk to a trained practitioner to learn more and see if steaming would be a good option for you.
- Do NOT steam when you are actively bleeding. You can however steam the day after the last day of your period to help move out any remaining blood. Steaming in the week leading up to your period can help with cramps and other menstrual complaints.
- It is NOT recommended to steam with any active infection.
Ingredients: 
Calendula : Anti-inflammatory. Moistening. Tones uterus
Lavender : Eases cramps. Relaxing 
Motherwort : Strengthens and relaxes uterine muscles, eases cramps, stimulates flow, balances hormones.
Rose buds : Eases menstrual pain. Slows heavy bleeding. Anti-inflammatory
Red raspberry: Tones the uterus. Slows bleeding. Fights bacteria and infections. Balances blood sugar. Stress relief 
Rosemary : anti-bacterial, anti-fungal, anti-microbial
Yarrow : Fertility, Inflammation , Poor circulation, and Pain