Actives

7 articles

A serum bottle with a dropper, representing retinoid skincare products

actives

Retinol vs Tretinoin: The Evidence Gap That Explains the Prescription

A systematic review found that four out of nine OTC retinol trials showed no benefit over a plain moisturiser. Meanwhile, prescription tretinoin has decades of strong clinical data. Here is what the evidence actually says about retinol vs tretinoin, and how Australian regulations shape your options.

  • skincare
  • topical-products
  • safety
Vitamin C serum bottles with fresh citrus fruits for skincare and health promotion

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Vitamin C Serum: Why Stability Beats Concentration Every Time

Vitamin C is one of the most studied ingredients in skincare, but stability matters more than concentration. Here is what the clinical evidence actually supports, and what the marketing leaves out.

  • skincare
  • topical-products
  • safety
A skincare serum bottle with dropper, representing chemical exfoliation acids like AHAs and BHAs

actives

Chemical vs Physical Exfoliation: AHAs, BHAs, PHAs, and How to Avoid Overdoing It

Two products both say '10% glycolic acid' on the label, but pH makes one dramatically more potent. Learn how AHAs, BHAs, and PHAs work, which suits your skin, and how to avoid over-exfoliation.

  • skincare
  • topical-products
  • safety
Flat lay of cosmetic serum bottles and boxes for beauty and skincare

actives

Peptides in Skincare: What the Science Says, What the Marketing Skips, and Which Ones Have Real Evidence

Peptides are one of skincare's fastest-growing ingredient categories, and one of its most overpromised. We break down the penetration problem, rank the peptides with real clinical evidence, and explain where they actually fit in an evidence-based routine.

  • skincare
  • topical-products
  • safety
A skincare serum bottle with dropper, representing niacinamide and other active ingredient serums

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Niacinamide for Skin: Why 2% Beats 10%, and Other Things the Marketing Skips

Niacinamide is one of the best-evidenced skincare actives available, but the race to higher concentrations is driven by marketing, not science. Here is what the research actually supports.

  • skincare
  • topical-products
  • safety
Woman applying hyaluronic acid serum with a dropper in a soft, well-lit setting

actives

Hyaluronic Acid for Skin: How It Actually Works, Molecular Weight Explained, and Myths Worth Questioning

Hyaluronic acid can hold 1,000 times its weight in water, but the marketing leaves out the parts that matter most. Here is what HA actually does on your skin, why molecular weight changes everything, and how to avoid the common mistakes that can make dryness worse.

  • skincare
  • topical-products
  • safety
A liposomal serum bottle with a dropper placed on a magazine, representing growth factor skincare products

actives

Growth Factors in Skincare: The Premium Price Without the Premium Evidence

Growth factors are one of skincare's most premium-priced categories, yet independent evidence remains thin. We review what the research actually shows about EGF penetration, stem cell marketing claims, safety concerns, and whether growth factor serums are worth the investment.

  • skincare
  • topical-products
  • safety