Encyclopedia
Sandwich Method
a layering technique in which a potent active is applied between two layers of a gentler product, usually moisturizer, to cushion its effect. It is frequently used with retinoids or...
Sandwich Method
a layering technique in which a potent active is applied between two layers of a gentler product, usually moisturizer, to cushion its effect. It is frequently used with retinoids or...
Buffering (Skincare)
the practice of diluting a potent active, or applying moisturizer before or mixed with it, to reduce its intensity and lower the chance of irritation. It is often used when...
Buffering (Skincare)
the practice of diluting a potent active, or applying moisturizer before or mixed with it, to reduce its intensity and lower the chance of irritation. It is often used when...
Purging
a temporary increase in breakouts that can occur when starting an ingredient that speeds up skin cell turnover, such as a retinoid or exfoliating acid. The theory is that accelerated...
Purging
a temporary increase in breakouts that can occur when starting an ingredient that speeds up skin cell turnover, such as a retinoid or exfoliating acid. The theory is that accelerated...
Retinization
the adjustment period during which skin adapts to a newly introduced retinoid, often marked by temporary dryness, flaking, redness, or sensitivity. This phase typically eases over several weeks as the...
Retinization
the adjustment period during which skin adapts to a newly introduced retinoid, often marked by temporary dryness, flaking, redness, or sensitivity. This phase typically eases over several weeks as the...
Retinoid
any member of the vitamin A family of ingredients used in skincare, ranging from gentle over-the-counter esters to prescription-strength derivatives. They work by binding to receptors in skin cells to...
Retinoid
any member of the vitamin A family of ingredients used in skincare, ranging from gentle over-the-counter esters to prescription-strength derivatives. They work by binding to receptors in skin cells to...
Actives
the ingredients in a formula that are responsible for producing a specific, measurable effect on the skin, as opposed to the bases, solvents, and stabilizers that carry them. Common examples...
Actives
the ingredients in a formula that are responsible for producing a specific, measurable effect on the skin, as opposed to the bases, solvents, and stabilizers that carry them. Common examples...
