Medication guide

The estradiol spray (Evamist)

Full-body estrogen in a once-daily spray on your inner forearm — dries in about a minute.

This is systemic estrogen. The spray delivers estradiol through the skin directly into your bloodstream — like a patch or gel, it bypasses the liver and reaches your whole body, treating hot flashes, night sweats, and sleep disruption. That means the same rule applies as with every systemic estrogen: if you have a uterus, you take progesterone alongside it.

How it works

Each metered spray delivers a precise dose of estradiol — the same estrogen your ovaries produced — that absorbs through the skin of your inner forearm and enters the bloodstream at a steady rate. Your prescription specifies how many sprays per day, usually one to three, applied once daily.

Applying it — your daily routine

Prime a new bottle: the first time you use each new bottle, spray it three times into its cap. This loads the pump so every dose after that is accurate. You only do this once per bottle.
Hold the applicator upright against clean, dry skin on your inner forearm, near the elbow, and press the pump fully.
If you're prescribed more than one spray, apply each one side by side on the forearm — never stacked on the same spot.
Let it dry completely, about 60 seconds, before covering the area with a sleeve. Wash your hands.

Same time every day, same arm area. Consistency is what keeps your levels steady — and steady levels are the whole point of transdermal delivery.

The transfer rule — this one matters

Until the site is dry and ideally covered, the medication can transfer to anyone — or any pet — who touches your forearm. Don't let children or pets come into contact with the treated area. If a child touches it, wash their skin right away with soap and water. Keep the site covered with clothing if contact is likely, and don't let anyone apply sunscreen or lotion over it.

Living with it

Water: no swimming, showering, bathing, or hot tubs for at least 2 hours after applying — the estrogen needs that time to fully absorb. Most women solve this by making the spray part of their morning routine, right after showering.
Sunscreen and lotion: don't apply anything over the spray site — it can change how much estrogen absorbs.
Missed a dose? Apply it when you remember unless it's close to the next dose — then just skip it. Don't double up.
No adhesive, no residue: unlike a patch, there's nothing to peel, nothing left on the skin, and no site rotation across your body — just alternate spots along the forearm.

What you might notice early on

The most common early effects are the same ones we see with any estrogen start or format change: headache, breast tenderness, light spotting, and occasionally nausea or skin redness at the spray site. These typically settle as your body adjusts. If anything bothers you or doesn't fade, log it in your tracker and message us — adjusting is what we do.

One thing that always gets checked: unusual or heavy vaginal bleeding. It's usually benign, but it's never something we ignore. Message us promptly so we can evaluate it.

Go to urgent care or the ER if you have:

Sudden severe headache, or changes in vision or speech
A severe allergic reaction: widespread rash or hives, or swelling of the eyelids, face, lips, tongue, or throat

Go deeper

For the full picture of how estrogen works, what it treats, the safety evidence, and what to expect month by month, read Estrogen: the in-depth guide. Want systemic coverage without a daily step at all? That's the three-month ring, Femring.