Four Gallate Antioxidants Head Toward a Final US Safety Update

Four small antioxidants that rarely get top billing on a serum label are near the end of a US safety re-review. On 11 September 2026 the Cosmetic Ingredient Review released a Draft Final Amended Report on alkyl gallates for the Expert Panel’s 5-6 October meeting [1] [2].

The draft conclusion the Panel is asked to finalise is straightforward in tone: propyl GallateFunctionalPropyl GallateFunctionalPropyl Gallate · Antioxidant (alkyl gallate)Antioxidant stabilizer; lead member of CIR’s alkyl gallates re-review.Open in the Index →, caprylyl GallateFunctionalCaprylyl GallateFunctionalCaprylyl Gallate · Antioxidant (alkyl gallate)C8 alkyl gallate antioxidant in CIR’s four-ingredient alkyl gallates amended assessment.Open in the Index →, dodecyl GallateFunctionalDodecyl GallateFunctionalDodecyl Gallate · Antioxidant (alkyl gallate)Lauryl/dodecyl gallate antioxidant in CIR’s alkyl gallates amended assessment.Open in the Index → and ethylhexyl GallateFunctionalEthylhexyl GallateFunctionalEthylhexyl Gallate · Antioxidant (alkyl gallate)Branched alkyl gallate used in some lip/eye-area products; part of CIR alkyl gallates group.Open in the Index → are safe in cosmetics in the present practices of use and concentration described in the assessment when formulas are made to be non-irritating and non-sensitising [1].

What gallates are doing in a bottle

In the INCI dictionary these ingredients are listed as antioxidants. In practice that usually means they help protect oils and other oxidisable parts of a formula from going rancid or discoloured, rather than acting as the star “active” on the front label. Propyl Gallate can also appear as a fragrance ingredient in dictionary terms [1].

They are esters of gallic acid with different alcohol chain lengths. Propyl is the short, familiar food-adjacent member. Caprylyl (also discussed in older literature as octyl gallate in some papers), dodecyl (lauryl) and ethylhexyl extend the family CIR had not fully grouped with Propyl Gallate in older reviews [1].

A short history of the Propyl Gallate line

CIR first published on Propyl Gallate in 1985 with a ceiling of 1%. In 2007, after new patch-test signals at higher challenge levels, an amended report tightened the picture to safe as then used at concentrations of 0.1% or less [1].

In June 2024 the Panel reopened the file: new toxicity data had accumulated, and three related in-use gallates still lacked a CIR review. A Tentative Amended Report in March 2026 introduced the four-ingredient conclusion with the non-irritating / non-sensitising qualification. The September draft final is the version the Panel is expected to turn into a Final Amended Report in October if it agrees with the discussion [1] [2].

What changed in this entry final packet

Since March, CIR says it received no new unpublished data. It did fold in a newly published retrospective patch-test study in atopic patients that included Caprylyl Gallate and Dodecyl Gallate, highlighted in the report text. Council comments on the draft and tentative versions were addressed [1] [2].

Use counts from FDA registration and listing data summarised in the report put Propyl Gallate in 1,127 formulations, at up to 0.1% in leave-on face and neck products in the tabulated data. The other three gallates appear in far fewer listings (21 or fewer each in the summary language), often without reported concentrations; the draft conclusion’s footnote says those should be expected to follow categories and concentrations comparable to others in the group [1].

How to read “non-irritating and non-sensitising”

That phrase is doing real work. CIR’s discussion notes that positive patch-test reactions appear in the literature, while also noting that clinical relevance can be uncertain and that some responses may be irritation rather than true sensitisation. The Panel’s draft posture is not “ignore allergy.” It is “safe in current use patterns if the finished formula is managed so those risks stay controlled” [1].

For enthusiasts, that maps to ordinary habits. If a product with a gallate stings beyond a brief adjust period, stop. If you have a known gallate contact allergy from patch testing, skip the ingredient family. Most people using a moisturiser where Propyl Gallate is a low-level stabiliser will never notice the name.

Why this matters even if you never shop for gallates

Antioxidant stabilisers are how many formulas stay elegant for two years on a shelf. When a safety panel updates a whole structural family at once, it quietly sets the rules of the road for chemists who choose among Propyl, Caprylyl, Dodecyl and Ethylhexyl Gallate. Ethylhexyl and Propyl are the ones the report notes in lip and eye-area use among the group [1].

The October meeting agenda lists alkyl gallates among the draft final reports the Panel should review and, if satisfied, issue as final [2]. Until that vote lands, this remains a draft final heading toward closure, not a journal reprint of a finished IJT paper.

Bottom line

CIR’s 11 September packet puts four alkyl gallate antioxidants one step from a final amended safety conclusion: safe as currently used when products are formulated to be non-irritating and non-sensitising [1]. The Index entries for these four ingredients keep their current grades until the final report is issued. Propyl Gallate has by far the most data; the other three are assessed largely by read-across from it.