Principia AH-2 Hyaluronic Acid Serum 2% + Vitamin B5 1% for Hydration & Plumping Care, 1.01 fl oz (30 mL)
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.
Key Benefits
- 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.
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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.
Ingredients Highlights
- Hyaluronic Acid Complex (2% with 4 types): Hyaluronic acid occurs naturally in the skin and has a strong capacity to attract and retain water—1 gram can hold up to 1 liter of water. Different molecular weights serve different roles: larger molecules may form a surface film, while smaller ones can reach deeper layers, helping create a three-dimensional network that draws water in and retains moisture—supporting hydration, the look of elasticity, firmness, and glow.
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Vitamin B5 (1%): A naturally derived substance known for supporting surface hydration, softness, and skin comfort. Vitamin B5 is also associated with soothing support, making it a refined choice for routines that need hydration with a calm, balanced feel.
Allergen warnings / cautions
- For external use only. Discontinue use if irritation occurs.
- Avoid direct contact with eyes; rinse thoroughly if contact occurs.
- Avoid unprotected sun exposure; use broad-spectrum sunscreen daily.
- Keep out of reach of children. Store in a cool, dry place.
- According to the brand, the formula is free from parabens, petrolatum, sulfates, silicones, fragrance, and gluten.
Principia is a Brazilian dermocosmetics brand founded in 2020 in São Paulo with a clear mission: democratize high-performance skincare through science-backed formulas, radical ingredient transparency, and fair, accessible positioning. Instead of relying on hype, Principia focuses on what matters most for results-driven routines—active ingredients at disclosed percentages, straightforward formulations, and a minimalist, clinical aesthetic designed for everyday use.
FAQ
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.
Complete your routine by exploring our curated Principia Collection for a clean, balanced, everyday glow.
Add Principia AH-2 to your cart and elevate daily hydration with Brazilian dermocosmetic elegance.
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