PRODUCT FORMULATIONS

our science

At Personal Day, we take a holistic approach to skincare. By deeply understanding how skin behaves, we craft formulas that meet the true needs of acne-prone skin. We challenge ourselves to find innovative ingredients that balance strength and gentleness—delivering visible results fast while staying kind to skin.

SUPERSTAR INGREDIENT

Mevalonic Acid

  • Repairs skin at the molecular level with rapid absorption
  • Strengthens your skin’s natural barrier function
  • Increases natural proteins like Squalene, CoQ10, Retinol, and lipids
  • Gentler on skin than glycolic acid and retinol
  • Significantly boosts cell turnover and growth factors, as shown by DNA Microarray testing with the EPISKIN-LM skin model over 48 hours at a .5% concentration
  • 100% plant-based and carbon neutral

Personal Day holds the exclusive rights to this ingredient for use in acne care products.

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SUPERSTAR INGREDIENT

Azelaic Acid

  • Anti-inflammatory, antioxidant, and antimicrobial properties
  • Helps stop the growth of acne-causing bacteria and keeps skin pores clean
  • Exhibits a direct anti-inflammatory effect through its ability to scavenge free oxygen radicals
  • Reduces inflammation associated with acne and rosacea
  • Penetrates all layers of the skin while maintaining a high concentration of the active ingredient
  • Dr. Mamina says, "Because azelaic acid helps with cell renewal, it helps with acne and improves overall texture for a smoother, brighter complexion.  Azelaic Acid is also anti-inflammatory, so it reduces redness and swelling. It’s anti-microbial, which means it helps kill acne causing bacteria, and it also helps to fade post-inflammatory hyperpigmentation, those dark spots left behind after pimples heal."

Sources:

  • National Institute of Health (2024). "Compound Summary: Azelaic Acid" (PubChem CID 2266). PubChem.
  • National Institute of Health. "Postepy Dermatol Alergol." 2023 Dec; 40(6): 716–724. NCBI.
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SUPERSTAR INGREDIENT

Zinc Hyaluronate

  • Stops bacteria overgrowth*
  • Increases hydration
  • Strengthen skin barrier
  • Reduces excess oil
  • Delivers up to 72% decrease in inflammatory factors*

*Based on manufacturer test results using .5% HA-Zn measuring Propionibacterium acnes, Staphylococcus epidernuidis, and Malassezia furfur & in-vivo testing expression of inflammatory factor IL-8 & PGE2

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Salicylic Acid

Salicylic Acid

  • Actively treats and prevents acne
  • Smooths skin and refines pores
  • Anti-redness & swelling
  • Helps to shed dead skin cells
Rice Powder

Rice Powder

  • Actively refines and exfoliates without drying out the skin
  • Micronized exfoliant unclogs pores without causing micro-tears
  • Softens the skin
Niacinamide

Niacinamide

  • Boosts hydration
  • Decreases hyperpigmentation
  • Improves skin barrier function
  • Treats inflammation and redness from acne
Squalane Oil

Squalane Oil

  • Increases hydration, restore suppleness
  • Anti-inflammatory
  • Neutralizes UV light damage
  • Visibly repairs skin barrier
Lactic Acid

Lactic Acid

  • Exfoliates skin to rid pore-clogging dead skin cells
  • One of the most gentle AHAs on the market
  • Calms skin
  • Eliminates acne-causing culprits on your skin
Chlorophyll

Chlorophyll

  • Calms angry skin
  • Keeps damage from the environment at bay
Papaya Fruit Extract

Papaya Fruit Extract

  • Contains papain, a powerful enzyme commonly used as a mild exfoliant
  • Contains vitamin C to brighten skin & fade hyperpigmentation
  • Anti-inflammation