Is Epsom Salt Safe During Pregnancy? (Updated 2026 Guide)
Updated April 13, 2026
The Answer
Yes, Epsom salt baths are generally safe during pregnancy. Plain, unscented Epsom salt (magnesium sulfate) can help relieve muscle aches, reduce swelling, and promote relaxation when used in warm not hot bath water.
Epsom salt is simply magnesium sulfate, a mineral compound that dissolves in bath water and may help ease common pregnancy discomforts like sore muscles, swollen feet, and stress. The main concern isn't the Epsom salt itself but the added fragrances and essential oils found in many scented varieties, which may contain phthalates linked to developmental concerns. Choosing plain, fragrance free Epsom salt and keeping bath water at a safe temperature (below 100°F) makes this a beneficial self care option during pregnancy.
Pregnancy Safe is 100% independent and research driven. No companies pay to promote or sponsor products.
✓ What's Safe
- • Plain, unscented Epsom salt with only magnesium sulfate listed as the ingredient
- • Products labeled 'fragrance free' (not just 'unscented,' which may still contain masking chemicals)
- • USP grade Epsom salt for pharmaceutical purity
- • Bath water temperature below 100°F (38°C) to avoid overheating
- • Soak time of 12-20 minutes for optimal benefit without overdoing it
- • Use 1-2 cups of Epsom salt per standard bathtub
✗ What to Avoid
- • Scented Epsom salts containing fragrance or parfum (may contain phthalates)
- • Products with added essential oils like lavender, eucalyptus, or chamomile during pregnancy
- • Hot baths above 100°F (38°C), which can raise core body temperature
- • Ingesting Epsom salt orally for constipation without doctor approval
- • Soaking for extended periods that could cause dizziness or dehydration
- • Products with added dyes or artificial colorants
Most Common Ingredients in Epsom Salt Products
We analyzed 16 epsom salt products. Here are the most common ingredients, ranked by how often they appear:
Ingredients to Watch Out For in Epsom Salt
These are the most common flagged ingredients across 16 epsom salt products we analyzed.
fragrance
CAUTION
Fragrance is a mixture of aromatic chemicals in scented products. Contains phthalates linked to preterm birth and neurodevelopmental effects in children.
Found in 11 of 16 products (69%)
anthemis nobilis oil
CAUTION
Anthemis nobilis oil is an herb used for relaxation and digestive support. May stimulate uterine contractions and has been associated with preterm birth in some studies.
Found in 1 of 16 products (6%)
sambucus nigra fruit extract
CAUTION
Sambucus nigra fruit extract is flowers from the elder plant used in teas and cordials. Has no established pregnancy safety data and may affect immune function.
Found in 1 of 16 products (6%)
Epsom Salt Products We've Analyzed
We graded 16 epsom salt products for pregnancy safety. 4 received an A grade.
Pregnancy Safe Epsom Salt Products
We found 4 pregnancy safe options. Here are some top picks.
| Grade | Product | Brand |
|---|---|---|
| A | Epsom Salt - 4Lb - Up&Up™ | Up&Up |
| A | Epsom Salt - 128Oz - Up & Up™ | Up & Up |
| A | Epsom Salt | Dr. Clark Research Association Dr. Clark Zentrum |
Your Questions Answered
Can pregnant women take Epsom salt baths?
Yes, pregnant women can safely take Epsom salt baths when using plain, unscented varieties and keeping water temperature below 100°F. Epsom salt baths can help relieve muscle aches, reduce swelling in feet and ankles, and provide stress relief. The magnesium in Epsom salt may be absorbed through the skin, potentially helping with magnesium levels. Always ensure you can safely get in and out of the tub, and limit soaks to about 15-20 minutes.
What are the risks of Epsom salt during pregnancy?
The primary risks aren't from plain Epsom salt itself but from how it's used. Hot bath water above 100°F can raise your core body temperature, which is concerning especially in the first trimester. Scented Epsom salts often contain synthetic fragrances with phthalates, which have been linked to developmental concerns. Oral consumption of Epsom salt as a laxative is not recommended during pregnancy without medical supervision, as it can cause dehydration and electrolyte imbalances.
What not to put in the bath when pregnant?
The American College of Obstetricians and Gynecologists recommends avoiding bath products containing phthalates, parabens, triclosan, and synthetic fragrances. Look for products labeled 'fragrance free' rather than 'unscented,' since unscented products can still contain chemicals designed to mask odors. Avoid bubble baths and bath bombs with artificial dyes and fragrances. Essential oils should also be used with caution, as some like rosemary and clary sage may stimulate contractions.
Does Epsom salt help with pregnancy swelling?
Many pregnant women find Epsom salt foot soaks or baths helpful for reducing swelling in their feet and ankles. The magnesium sulfate may help draw excess fluid from tissues through osmosis, providing temporary relief from edema. For best results, soak swollen feet in a basin with 1/2 cup Epsom salt in warm water for 15-20 minutes. While this can provide comfort, persistent or sudden swelling should be reported to your healthcare provider as it can indicate preeclampsia.
How often can I take Epsom salt baths while pregnant?
Most healthcare providers consider 2-3 Epsom salt baths per week safe during pregnancy, though you should confirm with your own provider. Keep each soak to 15-20 minutes and ensure the water stays at a comfortable, warm temperature rather than hot. Stay hydrated by drinking water before and after your bath. If you experience any dizziness, overheating, or discomfort, end your bath immediately and rest.
How Do We Score Products for Pregnancy Safety?
We analyze each product's ingredients and category to flag known risks and provide cautionary notices for general category safety concerns.
A - Safe
Excellent choice! All ingredients are considered safe during pregnancy.
What to do: Use with confidence.
B - Likely Safe
Pretty much safe with very minimal risk. Some ingredients may have limited pregnancy studies, but no significant safety concerns have been identified.
What to do: Use with confidence.
C - Limit
Contains ingredients with some pregnancy considerations. Research shows these ingredients may have limited safety data, potential for minor hormonal effects, or require caution based on animal studies.
What to do: Use sparingly and consider safer alternatives when available.
D - Caution
Similar to C grade but contains multiple cautionary ingredients. The combination increases overall concern.
What to do: Try to avoid if that makes you feel better. If you've already used it, no need to panic.
F - Avoid
Contains ingredients with established risks during pregnancy. Research shows these can cause birth defects, developmental harm, or serious maternal complications.
What to do: Do not use during pregnancy. If you've already used it, don't worry - contact your OBGYN if concerned.
References
- https://sensoriam.com/blogs/blog/can you wear perfume while pregnant
- https://www.thebump.com/a/perfume safe during pregnancy
- https://www.babymed.com/perfume during pregnancy
- https://www.matcanaturals.com/blogs/news/fragrances and pregnancy what you need to know
- https://bastilleparfums.com/en us/blogs/news/parfum et grossesse un danger pour les femmes enceintes
- https://pmc.ncbi.nlm.nih.gov/articles/PMC9163252/
- https://americanpregnancy.org/healthy pregnancy/is it safe/perfume and pregnancy/
- https://oneseedperfumes.com/blogs/news/perfume and pregnancy why exposure to scent is critial to consider
- https://eshaivf.com/blogs/are your perfumes hurting your fertility/%20%20
- https://www.cleanconsciousbeauty.com/best pregnancy safe perfumes perfume for pregnant mother/
- https://pubmed.ncbi.nlm.nih.gov/39079634/
- https://echochildren.org/research summaries/study finds link between phthalate exposure during pregnancy and development of multiple health outcomes in children/
- https://midatlanticwomenscare.com/ingredients in beauty products you should avoid during pregnancy/
- https://hsph.harvard.edu/news/phthalates exposure pregnancy loss gestational diabetes/
- https://www.marchofdimes.org/find support/blog/personal care products and cosmetic use during pregnancy
- https://tangieco.com/blog/dangers of synthetic fragrance and-6-studies to back it up/
- https://jamanetwork.com/journals/jamapediatrics/fullarticle/2794076
- https://pmc.ncbi.nlm.nih.gov/articles/PMC12045525/
- https://fertilityglo.com/blogs/post/chamomile tea in pregnancy safe or stimulant
- https://americanpregnancy.org/healthy pregnancy/is it safe/herbal tea/
