Tocopherol

Ottimo

Antiossidante

Tocopherol at a glance

  • The name of one of four forms of vitamin E
  • Tocopherols can be either naturally occurring or synthetically derived
  • Offers significant antioxidant properties, including defence from pollution
  • Works as a supporting ingredient to help stabilise vitamin C

Tocopherol description

Tocopherol is the name given to one of four forms of vitamin E. These four forms are d-alpha-tocopherol, d-alpha-tocopherol acetate, dl-alpha tocopherol, and dl-alpha tocopherol acetate. The “d” prefix indicates that the product was derived from natural sources, such as vegetable oils or wheat germ; whereas the “dl” prefix indicates that the vitamin was created from a synthetic base. Research has shown that natural forms of vitamin E are more effective than their synthetic counterparts, but both have antioxidant activity. You’ll most commonly find vitamin E listed as tocopherol or tocopheryl acetate on the ingredient list. Vitamin E is a naturally occurring component of healthy skin, and its second most prevalent antioxidant behind ascorbic acid (vitamin C). It offers significant antioxidant properties to help defend from pollution and other environmental stressors that would otherwise weaken skin, causing unwanted changes. In skin care formulas, vitamin E also works as a good supporting ingredient. For instance, in vitamin C products, vitamin E will donate a key electron that vitamin C (as ascorbic acid) needs to stabilise itself. Vitamin E also works well with other antioxidants such as rosemary, ferulic acid, and the amino acid taurine. Claims of using vitamin E to prevent scarring when skin is wounded haven’t yet been confirmed by published scientific research. Vitamin E (tocopherol) can visibly improve hyperpigmentation when used in a 1% concentration. Typically, lower amounts are used in skin care for antioxidant benefit and to help preserve the stability of delicate ingredients. Tocopherol as used in skin care is almost always supplied as an oil, since it is derived from sources like soy, rice bran, or flax oils, among others. It has a characteristic yellow to gold or even light brown colour and subtle odor. However, depending on the supplier, tocopherol may also be clear (transparent) to pale yellow. It will oxidise and become darker in colour from exposure to air and light.

Tocopherol references

  • Journal or Agricultural and Food Chemistry, June 2010, pages 7013-7020
  • Journal of Investigative Dermatology, November 2001, pages 1212-1217
  • Canadian Family Physician, July 2006, pages 855-856
  • Dermatologic Surgery, April 1999, pages 311-315

Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region.

Valutazione degli ingredienti

Ottimo

Comprovati e sostenuti da studi indipendenti. Ingrediente attivo eccezionale per la maggior parte dei tipi di pelle o dei problemi.

Buono

Necessario per migliorare la consistenza, la stabilità o la penetrazione di una formula.

Discreto

Generalmente non irritante, ma può presentare problemi per come appare esteticamente, nella stabilità o avere problemi di altro tipo che ne limitano l'utilità.

Da evitare

Può causare irritazioni. Il rischio aumenta se combinato con altri ingredienti potenzialmente problematici.

Non usare

Può causare irritazioni, infiammazioni, secchezza, ecc. Può offrire benefici solo in alcuni casi, ma nel complesso è dimostrato che fa più male che bene.

Sconosciuto

Non abbiamo trovato l'ingrediente nel nostro dizionario. Registriamo di volta in volta tutti gli ingredienti mancanti per tenere aggiornato il nostro dizionario.

Non classificato

Non abbiamo ancora assegnato un voto a questo ingrediente perché non abbiamo avuto modo di esaminare la ricerca in merito.