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Trend Watch · Issue 012 · 23 March 2026

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Issue 012

The collagen drink question, finally settled

A meta-analysis dropped. We read all 19 trials. Here is what they actually say.

Signed — Dr. Sundeep

Verdict № 01
01
Tier C

Liquid Collagen Drinks

Marketing Premium

Most beauty 'collagen drinks' (Hum, Vital, Crushed Tonic) deliver 5–10 g of collagen peptides identical to powder format, plus added sugar, flavours, and ₹ 200 per dose of bottling cost. The active ingredient works (see our Collagen Peptides brief) — the delivery format is a tax. Powder, mixed into coffee, gives the same endpoint at one-third the cost.

Bottom line

Same molecule. 3× the price. Buy the powder.

Verdict № 02
02
Tier C

Topical Exosomes (post-procedure)

Premature

Exosomes are nano-vesicles released by cells; in vitro and animal data on wound healing are genuinely interesting. Human topical-cosmetic data is, at this point, very thin — no large RCTs, regulatory frameworks unclear, and the 'plant-derived exosomes' marketed by most clinics may not be exosomes at all by accepted molecular biology criteria. Charging ₹ 25,000 per facial for a poorly characterised ingredient is, kindly, premature.

Bottom line

Wait for the human RCTs. Save the money for sunscreen.

Verdict № 03
03
Tier C

Skin-Gut Axis Probiotics (oral)

Promising, Unclear

The skin-gut-microbiome axis is real and an active research area. The available human RCTs of oral probiotics (Lactobacillus rhamnosus, Bifidobacterium) for atopic dermatitis show modest improvement in children; adult skin-condition data is much thinner. The marketing has galloped well ahead of the literature. If you have eczema-prone children, worth a conversation with your derm. For adult 'glow' — the evidence does not yet support the spend.

Bottom line

Real research direction. Premature consumer market. Wait three years.