and allergies can appear suddenly when you've been exposed to something without incident for years.
Does that moisturizer have any fragrance, at all? I ask because hydraluronic acid is produced naturally by your own body. An allergy to it would be extremely uncommon. Another component of the moisturizer is a far likelier candidate for your contact dermatitis.
I have snowflake skin, too, so I go you one better and use Dr. Bronner's in the shower and an unscented coconut based oil afterward. I smell like a macaroon for the rest of the day but it helps. I live in an area with very hard water, so once in a while I rinse off with white vinegar, wait a minute or so, and rinse it off. It seems to remove soap residue, which can also be very drying.
Damn, getting old is so much fun, especially the racking up new allergies part.
I will add that we used Eucerin for dermatology patients in the hospital. Unscented Aveeno soaks were also helpful to reduce discomfort. Skin gets patted barely dry and the Eucerin is applied sparingly. Twice or three times a day generally produced improvement. I've seen Eucerin sold at Walmart, Bradlees, CVS, and Walgreens or you can get it from Amazon. This is what to look for: https://www.amazon.com/Eucerin-Advanced-Repair-Creme-Packaging/dp/B01DIXHNUU/ref=sr_1_7?crid=3UKHWMN3JZCYO&dib=eyJ2IjoiMSJ9.cFVZSr8loDmguGQtEdMNhtwVweWNPvCcjsO29EFXrDJBuLT-gsAhQJiGJG_3qte0w4JvnhgrWfRDH-ik3-2d-Ix3qJjsCmK2P9NOZ_jV1fW8WF6MBAiqhdXmjA_T8vAxECdaaZyKFoXuaN6qzFuXhroKgTAFbZaMVRrehsS2QknCjb5yNJ2O55py2r4sIEstJVk0R3-alBx5Q2ny93l0BBmWteUV6erQK9dJ3TNwrkzGQhtjwomuCfW6uUwA825H1chPNi90vkxlxVL4z92aGe88YNvvEMhRCeY-KGjN69E.WJWoSzKb4wwv56mLgbvUMDBhZ0t_JFM9vFjWr8PJU-g&dib_tag=se&keywords=eucerin&qid=1722801470&sprefix=euce%2Caps%2C1489&sr=8-7
That has got to be the longest link I have ever posted.