The Journal
Research-backed articles on lipid science, oral care, skincare and the ingredients behind every CallNature formula.
Scars & Stretch Marks
Why Do My Stretch Marks Itch When I'm Losing Weight? (And How to Calm It)
By S. C. Aris about the author Last updated: 14 July 2026 Quick answer Your stretch marks itch during weight loss because rapid changes in body size put the thin, remodeling skin o…
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Nails
Why Won't My Nails Grow Past a Certain Length? (The Grow-vs-Break Equilibrium)
By S. C. Aris about the author Last updated: 13 July 2026 Quick Answer If your nails seem to stall at a certai…
Dental Health
Does Glycerin in Toothpaste Block Remineralization? What the Evidence Actually Says
By S. C. Aris about the author Last updated: 12 July 2026 Quick answer No — there is no good evidence that gly…
Dental Health
Is Titanium Dioxide in Toothpaste Safe to Swallow? What the Evidence Says
By S. C. Aris about the author Last updated: 11 July 2026 Quick answer Titanium dioxide listed on a label as t…
Skin / Anti-aging
Are Sleep Wrinkles Permanent? How to Prevent Sleep Lines on Your Face
By S. C. Aris about the author Last updated: 10 July 2026 Quick answer Are sleep wrinkles permanent? Not at fi…
Dental Health
Why Can't I Smell My Own Bad Breath? (And How to Actually Check)
By S. C. Aris about the author Last updated: 9 July 2026 Quick answer You can't smell your own bad breath beca…
Dental Health
Where to Buy Dental Pro 7: The Official Store, and Why It's Not on Amazon
If you have searched for Dental Pro 7 recently, you may have seen a confusing mix of websites, "official store…
Nails
Should You Buff the Ridges Out of Your Nails? Why Nail Experts Say Don't
By S. C. Aris about the author Last updated: July 6, 2026 Quick Answer No routinely buffing ridges out of your…
Dental Health
Why Do My Teeth Look Longer After a Deep Cleaning? (And Will My Gums Come Back?)
By S. C. Aris about the author Last updated: July 8, 2026 Quick Answer Your teeth almost certainly didn't get …
Scars & Stretch Marks
Why Is My Scar Still Red — and How Long Does Scar Redness Last?
By S. C. Aris about the author Last updated: 7 July 2026 Quick answer A red scar is almost always normal heali…
Nails
Does Nail Hardener Actually Weaken Your Nails? The Formaldehyde Paradox
By S. C. Aris about the author Last updated: 4 July 2026 Quick answer Used occasionally, a formaldehyde nail h…
Dental Health
Why Does My Breath Still Smell After Brushing and Flossing?
By S. C. Aris about the author Last updated: 2 July 2026 Quick answer If your breath still smells after brushi…
Dental Health
Receding Gums From Brushing Too Hard: How to Stop It (and What Actually Helps)
By S. C. Aris about the author Last updated: 1 July 2026 Quick answer Yes brushing too hard is one of the most…
Scars & Stretch Marks
How to Reduce the Appearance of a C-Section Scar
By S. C. Aris about the author Last updated: 30 June 2026 Quick answer You can't erase a C-section scar comple…
Nails
How to Repair Damaged Nails After Gel or Acrylic Removal
Quick answer: how to repair damaged nails after gel or acrylic removal You can't truly "fix" keratin that's al…
Skin / Anti-aging
Is Alcohol Denat in Skincare Bad for Your Skin? (What the Label Really Means)
By S. C. Aris about the author Last updated: 28 June 2026 Quick answer: Is alcohol denat in skincare bad? It d…
Skin / Anti-aging
Bakuchiol Side Effects: Is It Safe, and Who Should Avoid It?
By S. C. Aris about the author Last updated: 27 June 2026 Quick answer: Is bakuchiol safe? For most people, ye…
Scars & Stretch Marks
Do Old Scars Ever Fade?
⚡ Quick Answer: Many older scars do keep fading and flattening for months — sometimes a year or two — but most…
Nails
Why Are My Nails So Weak and Brittle — and What Actually Helps?
⚡ Quick Answer: Weak, brittle nails that split, peel, or bend usually come from one thing more than any other:…
Skin / Anti-aging
Rosehip vs Retinol for Ageing Skin: A Scientific Comparison
⚡ Quick Answer: Retinol is the most evidence-backed anti-ageing active there is — but it comes with irritation…