Principia AH-2 Hyaluronic Acid Serum 2% + Vitamin B5 1% for Hydration & Plumping Care, 1.01 fl oz (30 mL)
- A lightweight hydrating serum formulated with Hyaluronic Acid 2% and Vitamin B5 1% to help support the look of plumper, more dewy skin. Designed to be applied before moisturiser, this serum may help support the appearance of soft, supple-looking skin when used as part of a daily skincare routine.
For those looking to support the appearance of more hydrated, plumper-looking skin Suitable for all skin types, including sensitive skin For daily use, morning and/or evening, as part of a skincare routine
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- Formulated with Hyaluronic Acid 2% to help support a dewy, plump-looking complexion
- Vitamin B5 1% helps support the appearance of soft, comfortable-feeling skin
- Lightweight texture designed to be layered under moisturiser
- For daily use as part of a hydrating skincare routine
Apply a few drops to clean, dry face and neck Gently press into skin before applying moisturiser Use daily, morning and/or evening, for best results For external use only — avoid eye area
- For external use only
- Avoid contact with eyes
- Discontinue use if irritation occurs
- Layer under your preferred moisturiser for best results
- Keep out of reach of children
Hyaluronic Acid helps support a dewy, plump-looking complexion, while Vitamin B5 supports the appearance of soft, comfortable skin — together aimed at a more hydrated, supple-looking face.
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Learn morePrincipia AH-2
Principia AH-2 is a Brazilian dermocosmetics hydrator designed to deliver a polished, well-rested look—morning and night. With a 2% complex of four types of hyaluronic acids and 1% vitamin B5, this lightweight serum helps skin feel deeply hydrated, look more luminous, and appear smoother and more supple over time. It is an elegant essential for routines that prioritize comfort and visible refinement, pairing beautifully with active-led serums and daily sunscreen.
For salon retail and international resellers, AH-2 offers a clear story: multi-level hydration support with a modern finish, suitable for all skin types—including routines that need hydration without heaviness.
Why you’ll love it
Hydration support
Helps attract and retain moisture for a more comfortable, hydrated feel.
Plumping appearance care
Helps skin look smoother and more supple as hydration improves.
Firmness + elasticity appearance
Helps support the look of firmer, more elastic skin over time.
Glow enhancement
Helps improve the look of radiance for a fresh, healthy-looking finish.
Fine line appearance care
Helps soften the look of fine lines as skin feels better hydrated.
Under-eye freshness support
May help improve the appearance of under-eye darkness and puffiness with consistent use.
Non-comedogenic profile
The brand reports no comedogenic or acnegenic effect in testing.
Dermatologically tested (brand-reported)
The brand reports irritation and sensitization testing with no irritation observed in participants.
How to use
Use daily, morning and night. Apply on clean, dry skin before creams, sunscreen, and makeup. Dispense a few drops onto fingertips (avoid touching the dropper to skin) and spread gently over the face, including the eye area if tolerated. Avoid direct contact with eyes. Store in a cool, dry place.
In a 30-day perceived efficacy study, participants reported improvements in: hydration (100%), glow (100%), softness (100%), firmness (90%), under-eye puffiness (90%), wrinkles appearance (85%), fine lines (85%), and under-eye dark circles (85%). The brand also reports instrumental measurements indicating increased hydration after 1 hour and 15 days, plus variation in firmness and elasticity parameters after 30 days. Results may vary.
Product highlights
Product information
Can I use Principia AH-2 twice a day?
Yes. The brand indicates daily AM/PM use and it layers well under moisturizer, sunscreen, and makeup.
Is AH-2 suitable for all skin types, including oily skin?
Yes. It is suitable for all skin types and is designed to hydrate without a heavy feel.
Can I apply AH-2 around the eyes?
The brand indicates safety and efficacy were evaluated for the eye area. Apply gently and avoid direct contact with eyes.
Can I use AH-2 with acids or retinoids?
Yes. Hydrating serums are commonly paired with stronger actives to support comfort. Apply AH-2 before moisturizer in your routine.
Is Principia cruelty-free?
The brand states it does not test on animals.
