Does Hyaluronic Acid Serum Actually Dehydrate Your Skin?

Myth Busted
We test the viral claim that this cult serum can suck moisture from your skin instead of adding it.
Expert Analysis · Honest Reviews · Real Results
1.🔍The Viral Backlash

Everyone says HA is a desert for your face. That it pulls moisture from your skin instead of the air. I had to test it.

The rumor started because HA is a humectant — it grabs water. If the air is drier than your skin, it can theoretically pull from the deeper layers.

2.💧The Cult Serum

The Ordinary’s HA 2% + B5. $8.90. The claim that made me try it? That it’s a simple, effective hydrator. No frills.

1

The Texture

Slightly sticky, viscous slip — not watery.

2

The Dry-Down

Absorbs in about 30 seconds, leaves a faint film.

3

The Layering

Pills under certain sunscreens. A warning.

a bottle of water

Photo: Lora Seis / Unsplash

3.🤔What’s Actually In It

It’s a short list. Four forms of hyaluronic acid at different molecular weights. The B5 is for barrier support.

The low weight HA goes deeper, the high weight sits on top. This is key.

  • Hyaluronic Acid: Binds up to 1000x its weight in water
  • Sodium Hyaluronate: A salt form, penetrates slightly
  • Hyaluronic Acid Crosspolymer: A larger molecule for surface hydration
  • Vitamin B5: Repairs the skin barrier, reduces irritation
neutrogena oil free moisture lotion

Photo: Poko Skincare / Unsplash

4.📊The Reality Check

Feels like spreading a thin layer of aloe gel. Not luxurious. Immediate tightness if you don’t seal it in fast.

Week 2: My cheeks looked plumper. But my forehead? Felt tighter. The difference was shocking — it highlighted my drier zones.

💡

One Thing: Apply to damp skin. Immediately. Then lock it in with a moisturizer within 60 seconds. This is non-negotiable.
5.Who It’s For

My fine lines were softer. No miracle. But dehydration lines? Gone. Oiliness stayed the same.

Buy if
Your skin is normal-to-oily and you live in a humid climate.
⏭️

Skip if
You have dry or sensitive skin in a dry climate — it might backfire.
💰

Worth it?
For under $9, it’s a brilliant experiment. But it’s a tool, not a cure.
6.💡Final Call

The myth is half-true. This serum is a moisture broker. In the right conditions, it hydrates. In the wrong ones, it’s a thief.

7.5/10
A potent tool with strict instructions.
🛍️

Where to Buy: Sephora or the brand site. Get the travel size first to test your climate’s reaction.