Skin Encyclopedia

An evidence-based skincare reference by SYNC Beauty.

Encyclopedia

Mandelic Acid + Niacinamide

a gentle brightening pairing of mandelic acid, a large-molecule alpha-hydroxy acid, with vitamin B3. Mandelic acid exfoliates slowly and mildly, making it a good option for sensitive or blemish-prone skin,...

Mandelic Acid + Niacinamide

a gentle brightening pairing of mandelic acid, a large-molecule alpha-hydroxy acid, with vitamin B3. Mandelic acid exfoliates slowly and mildly, making it a good option for sensitive or blemish-prone skin,...

Lactic Acid + Hyaluronic Acid

a balancing pairing of lactic acid, a gentle exfoliating alpha-hydroxy acid, with hyaluronic acid, a hydrating humectant that binds water. Lactic acid smooths and brightens the surface while offering mild...

Lactic Acid + Hyaluronic Acid

a balancing pairing of lactic acid, a gentle exfoliating alpha-hydroxy acid, with hyaluronic acid, a hydrating humectant that binds water. Lactic acid smooths and brightens the surface while offering mild...

Glycolic Acid + Salicylic Acid

a pairing of glycolic acid, a small-molecule alpha-hydroxy acid, with salicylic acid, an oil-soluble beta-hydroxy acid. Glycolic acid resurfaces the skin's surface for a brighter, smoother look, while salicylic acid...

Glycolic Acid + Salicylic Acid

a pairing of glycolic acid, a small-molecule alpha-hydroxy acid, with salicylic acid, an oil-soluble beta-hydroxy acid. Glycolic acid resurfaces the skin's surface for a brighter, smoother look, while salicylic acid...

BHA + PHA

a combination of oil-soluble beta-hydroxy acid with the milder, water-binding polyhydroxy acids. BHA works inside pores to clear congestion, while PHAs gently exfoliate the surface and help retain moisture. This...

BHA + PHA

a combination of oil-soluble beta-hydroxy acid with the milder, water-binding polyhydroxy acids. BHA works inside pores to clear congestion, while PHAs gently exfoliate the surface and help retain moisture. This...

AHA + PHA

a pairing of alpha-hydroxy acids with polyhydroxy acids, a gentler class of exfoliating acids with larger molecules. AHAs deliver more noticeable surface exfoliation, while PHAs exfoliate more mildly and also...

AHA + PHA

a pairing of alpha-hydroxy acids with polyhydroxy acids, a gentler class of exfoliating acids with larger molecules. AHAs deliver more noticeable surface exfoliation, while PHAs exfoliate more mildly and also...

AHA + BHA

a combination of alpha-hydroxy acids, which are water-soluble surface exfoliants, with beta-hydroxy acid, which is oil-soluble and works inside pores. Used together, they address both surface texture and dullness as...

AHA + BHA

a combination of alpha-hydroxy acids, which are water-soluble surface exfoliants, with beta-hydroxy acid, which is oil-soluble and works inside pores. Used together, they address both surface texture and dullness as...