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Carla Valette@carlavaletteInstagram

N’achète pas de skincare si :

what it claims

It is useless to invest in other cosmetic products (skincare) if you do not apply sunscreen daily to protect your skin.

holds up

The assertion that sunscreen is the essential pillar of any beauty routine is scientifically indisputable.

noli's read

The assertion that sunscreen is the essential pillar of any beauty routine is scientifically indisputable. UV exposure is estimated to be responsible for nearly 80% to 90% of the visible signs of premature skin aging, such as loss of firmness or the appearance of pigment spots. Regarding clinical evidence, a benchmark randomized controlled trial conducted by Hughes et al. over 4.5 years (published in the Annals of Internal Medicine) demonstrated that daily application of broad-spectrum sunscreen reduces visible skin aging by 24% compared to occasional use. Furthermore, a prospective study published in Dermatologic Surgery by Randhawa et al. shows that daily use of an SPF over one year improves skin clarity and texture by 40% to 52%, thus revealing a regenerative effect. Finally, the use of 100% mineral filters is particularly validated by expert opinion for correcting the appearance of redness while respecting the skin barrier of reactive or fragile skin. Therefore, not using sun protection effectively renders the other efforts in your skincare ritual futile.

the sources

  1. 1Green AC, Williams GM, Logan V, Strutton GM 2011
  2. 2Hughes MCB, Williams GM, Baker P, Green AC 2013

Claimed by Carla Valette. Noli grades the claim, never the person.

Decoded by Noli · July 13, 2026 · the original post

What the graded evidence says

Evidence
A-
Effect
melanoma incidence and photoaging — Nambour RCT follow-up: daily sunscreen vs discretionary use — melanoma HR 0.50 (95% CI 0.24-1.02) overall and HR 0.27 (95% CI 0.08-0.97) for invasive melanoma. Skin-aging RCT: 24% less photoaging in the daily-sunscreen group (relative odds 0.76, 95% CI 0.59-0.98) over 4.5 years.
Measured on
adults (community-based Australian RCTs)
Carla Valette in the Register86 claims graded · solidity 88/100See their record →

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