Medik8 Hydr8 B5

£40.00

Hydr8 B5 is a lightweight rehydration serum built on multi-weight hyaluronic acid and vitamin B5 — and it's the product we recommend more often than almost anything else, because dehydration underlies far more skin complaints than people realise.

Hyaluronic acid holds many times its own weight in water. Using several molecular weights means hydration is delivered at different depths rather than sitting on the surface, while vitamin B5 (panthenol) supports the barrier and helps skin hold onto that water rather than losing it again within hours.

It layers under anything, interacts with nothing, and is safe alongside every active in your routine. If your skin feels tight, looks dull, or your fine lines appear more obvious at the end of the day, this is usually the missing step.

BEST FOR
- Dehydrated skin — tight, dull, flat-looking
- Fine lines that look worse when skin is dry
- Anyone using retinoids, acids or vitamin C
- Sensitive and reactive skin
- Oily skin that's dehydrated rather than dry
- Layering under any moisturiser, in any routine

KEY INGREDIENTS
- Multi-weight Hyaluronic Acid — hydration delivered at several depths rather than surface only
- Vitamin B5 (Panthenol) — supports the barrier and reduces water loss
- Glycerin — additional humectant hydration

USAGE INSTRUCTIONS
Apply 3–4 drops to clean, slightly damp skin morning and evening, before moisturiser.

Applying to damp skin matters. Hyaluronic acid draws water from wherever it can find it, so on dry skin in a dry room it can pull moisture upward rather than in.

Follow with a moisturiser to seal it.

Suitable for daily use alongside any other product in your routine.

These are not the same thing and the difference determines what you need.

Dry skin is a skin type. It lacks oil, feels rough, and needs lipids — a richer moisturiser.

Dehydrated skin is a condition. It lacks water, feels tight, looks dull and flat, and can happen to oily skin just as easily. It needs humectants, which is what this is.

Most people who describe their skin as dry are actually dehydrated, and reach for heavier creams that don't fix it. If your skin is oily but tight, this is the product you want.
Can I use it with everything?
Yes. Hyaluronic acid is non-active and non-sensitising. It layers under vitamin C, over acids, alongside retinal — nothing conflicts.

Hydr8 B5 or Hydr8 B5 Intense?
The serum is lightweight and layers under a moisturiser. Intense is thicker and more cushioned, better for very dehydrated or mature skin. Start with the standard version.

Will it help my fine lines?
Hydrated skin plumps, so fine lines look softer — a real but temporary effect that depends on continued use. For structural change to lines you need vitamin A. The two work well together.

Can I use it in pregnancy?
Yes. There's nothing here that's contraindicated.

Do I still need a moisturiser?
Yes. This adds water; a moisturiser stops it evaporating. On its own in a dry environment, hyaluronic acid can leave skin feeling tighter rather than better.

Medik8 Hydr8 B5

Dry Skin or Dehydrated Skin?

FAQ

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