Topical sodium hyaluronate is considered safe during pregnancy. It’s a substance your body already produces naturally, forming part of your connective tissue, skin, and joint fluid. When applied to the skin or used as eye drops, it poses no known risk to a developing baby. Injectable forms, however, carry different considerations and require a conversation with your provider.
What Sodium Hyaluronate Actually Is
Sodium hyaluronate is the salt form of hyaluronic acid. The two names are used almost interchangeably in skincare, and their safety profiles are identical. Your body naturally produces hyaluronic acid to maintain the flexibility and elasticity of skin, cartilage, and other tissues. It works by binding water, keeping those tissues hydrated and cushioned. Because it’s already a natural component of human tissue, the immune system doesn’t treat it as a foreign substance.
Topical Use: Serums, Creams, and Lotions
Skincare products typically contain sodium hyaluronate at concentrations between 0.2% and 2%, depending on the product type. Neither hyaluronic acid nor sodium hyaluronate appears on the EU’s restricted or prohibited list for cosmetic ingredients, and dermatology reviews have specifically noted that topical hyaluronic acid during pregnancy “is considered safe and can be used liberally.”
The reason it’s so low-risk comes down to how little actually enters the body. High molecular weight hyaluronic acid, the most common form in moisturizers and serums, doesn’t pass through the outer layer of skin at all. Even smaller molecular weight versions only penetrate a few layers deep, with studies showing that just 2 to 3% of the applied dose enters the skin. Molecules above 1,000 kilodaltons, which is a common size in cosmetic formulas, essentially sit on the surface and hydrate from there. Nothing reaches systemic circulation in meaningful amounts.
Many pregnant people use hyaluronic acid products specifically for stretch marks. It’s one of the few active skincare ingredients that remains clearly in the safe category, unlike retinoids or certain chemical exfoliants that should be avoided during pregnancy.
Eye Drops for Dry Eyes
Dry eye is a common pregnancy symptom, driven by hormonal shifts that reduce tear production. Sodium hyaluronate eye drops (typically at 0.1% to 0.3% concentration) are a first-line treatment, and they’re classified as safe during both pregnancy and breastfeeding. A review in the journal Pharmaceuticals confirmed that hyaluronate eye drops at these concentrations showed no congenital defects and no adverse neonatal outcomes.
This matters because many other dry eye treatments, including certain anti-inflammatory drops and immunomodulators, are not safe during pregnancy. Sodium hyaluronate drops are one of the few options you can use without concern.
Oral Supplements
Hyaluronic acid supplements taken by mouth are generally considered safe, including during pregnancy. Cleveland Clinic notes that reactions or adverse effects from hyaluronic acid are rare, and it is safe to use while pregnant or nursing.
One retrospective study followed 200 pregnant women who took 200 mg of high molecular weight hyaluronic acid daily (alongside magnesium, vitamin B6, vitamin D, and alpha lipoic acid) starting from the seventh week of pregnancy through delivery. The treatment group experienced significantly fewer adverse events compared to controls: preterm birth rates dropped from 10% to 1.5%, and pelvic pain with spontaneous contractions fell from 30% to 1.5%. While those results reflect a combination supplement rather than hyaluronic acid alone, the researchers noted that the findings “open a reassuring scenario regarding its oral administration during pregnancy.”
That said, oral supplements of any kind during pregnancy deserve a mention to your healthcare provider, simply so they know the full picture of what you’re taking.
Injectable Hyaluronic Acid Is Different
Dermal fillers and joint injections are a separate category. Cleveland Clinic lists pregnancy as something you should disclose to your care team before receiving sodium hyaluronate injections for joint pain. Cosmetic filler providers similarly advise against injections during pregnancy, not because there’s evidence of harm, but because there’s no safety data from controlled studies in pregnant populations. The cautious approach is to postpone elective injections until after delivery.
The distinction is straightforward: topical application and eye drops deliver negligible amounts to the bloodstream, while injections deliver the substance directly into tissue or joints, creating a different exposure profile that hasn’t been studied in pregnancy.
Skin Sensitivity During Pregnancy
Pregnancy hormones can make skin more reactive than usual, which sometimes leads to irritation from products that were previously fine. Sodium hyaluronate itself is one of the least irritating skincare ingredients available, but the other ingredients in a product (fragrances, preservatives, certain botanical extracts) could trigger a reaction on sensitized skin. If you notice redness or irritation from a new product, the culprit is more likely another ingredient in the formula than the hyaluronic acid itself.
Patch testing a new product on a small area of your inner arm before applying it to your face or belly is a simple way to check for sensitivity, especially during the first trimester when hormonal shifts are most dramatic.