Principia Mix-01 Multi-Acid Serum for Oil Control & Blemish-Prone Skin, 1.01 fl oz (30 mL)
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Learn morePrincipia Mix-01
Principia Mix-01 is a Brazilian dermocosmetics night serum created for modern, high-performance routines that prioritize clarity, comfort, and visible refinement. With a calibrated blend of 4 proven actives—5% niacinamide, 4% glycolic acid, 3% tranexamic acid, and 2% salicylic acid—this formula helps support a smoother-looking texture, less visible congestion, and a more balanced, luminous finish over time.
Why you’ll love it
Oil control
Helps reduce the look of excess shine and supports a more balanced finish.
Blemish and blackhead care
Helps keep pores looking clearer and supports fewer visible clogs over time.
Smoother texture
Helps refine the look of uneven texture for a softer feel.
Radiance support
Helps improve the look of dullness for a healthier-looking glow.
Pore appearance support
Helps reduce the look of enlarged pores with consistent nightly use.
Dermatologically tested (brand-reported)
The brand reports primary irritation and sensitization testing with no irritation observed in participants.
How to use
- Step 1Apply on alternate nights for 1 week, then every night as tolerated.
- Step 2Use on clean, dry skin before creams.
- Step 3Dispense a few drops onto fingertips (avoid touching the dropper to skin) and spread gently over the face.
- Step 4Avoid the eye area. Use sunscreen daily and minimize sun exposure while using exfoliating acids.
Product highlights
Product information
Is Principia Mix-01 suitable for all skin types?
The brand indicates it is suitable for all skin types. Because it contains multiple exfoliating acids, sensitive skin types may prefer a slower introduction.
How often should I use Mix-01?
Start on alternate nights for one week, then use nightly as tolerated. If dryness occurs, reduce frequency and support with a barrier-friendly moisturizer.
Can I use Mix-01 with vitamin C or retinoids?
Many routines can combine actives, but to reduce the risk of irritation, consider alternating nights and avoid stacking multiple strong exfoliants in the same routine.
Can I apply Mix-01 near my eyes?
No. Avoid the eye area and eyelids, and do not apply on the corners of the nose and mouth if those areas are easily irritated.
Is this product cruelty-free?
The brand states it does not test on animals.
Additional directions
- In a 60-day perceived efficacy study , participants reported improvements intexture (100%) , blackheads (97%) , softness (97%) , radiance (97%) , and oiliness (91%) . The brand also reports instrumental measurements over 60 days suggesting improvements in firmness and elasticity indicators.
