Home Cosmetic Science Talk Formulating Advanced Questions Which ingredient is most likely to be causing irritation?

  • Which ingredient is most likely to be causing irritation?

    Posted by Yulin on April 6, 2021 at 11:54 pm

    Aqua (Deionized Water)
    Aloe Barbadensis Leaf Juice (Organic Aloe)
    Cucumis Sativus Fruit Water (Cucumber Extract)
    Simmondsia Chinensis Seed Oil (Organic Jojoba Oil)
    Cassia Angustifolia Seed Extract (Botanical Hyaluronic Acid)
    Palmitoyl Tripeptide-5
    Glycine
    Palmitoyl Tetrapeptide-7
    Palmitoyl Tripeptide-1
    Sodium PCA
    Arginine
    Aspartic Acid
    Globularia Cordifolia Callus Culture Extract (Plant Stem Cells)
    Glycine
    Alanine
    Serine
    Valine
    Proline
    Threonine
    Isoleucine
    Histidine
    Phenylalanine
    Polysorbate 20
    Vinca Major Extract (Periwinkle)
    Glycerin (Kosher, Vegetable)
    Dimethyl Sulfone (MSM)
    Sodium Lactate
    Arginine
    Glycyrrhiza Glabra Root Extract (Licorice)
    Tocopheryl Acetate (Vitamin E)
    Camellia Sinensis Leaf Extract (Organic Green Tea)
    Centella Asiatica Extract (Organic Gotu Kola)
    Equisetum Arvense Extract (Organic Horsetail Extract)
    Geranium Maculatum Extract (Organic Wild Geranium)
    Taraxacum Officinale Extract (Organic Dandelion Extract)
    Hydroxyethyl Cellulose
    Carrageenan
    Sodium Benzoate (Preservative)
    Potassium Sorbate (Preservative)
    Ethylhexylglycerin (Preservative)

    Yulin replied 3 years, 6 months ago 6 Members · 9 Replies
  • 9 Replies
  • OldPerry

    Member
    April 7, 2021 at 1:22 am

    Wow, that’s a lot of ingredients!
    Ethylhexylglycerin?
    Any of the extracts

  • Pharma

    Member
    April 7, 2021 at 4:50 am
    Sorbate can too…
    BTW glycine and arginine are listed twice.
  • Yulin

    Member
    April 7, 2021 at 4:29 pm

    Thank you for the feedback! Noted on listed twice. Do you know what would be causing stickiness? 

  • Pharma

    Member
    April 7, 2021 at 6:24 pm

    Nearly everything in that product except water can cause stickiness if used abundantly. Too much amino acids, moisturisers, plant extracts, gelling agents and so on will all render your product tacky and feeling ‘greasy’.

  • Graillotion

    Member
    April 7, 2021 at 6:27 pm

    Need to include inclusion rate to get a good answer on that.

    ie: glycerol at low rates….not sticky in the end product (usually)…glycerol at higher rates….will contribute to a sticky end product.

    Just feel each of your ingredients, neat…and you can answer that question your self….If it goes in sticky, and included at more than a trace level…it will begin to transfer that characteristic to the final product.

  • RedCoast

    Member
    April 8, 2021 at 2:04 am

    Despite their “soothing” properties, aloe and green tea can cause allergic contact dermatitis. It’s rare, but it happens-there are dozens of phytochemicals that can be responsible for it.

  • abierose

    Member
    April 8, 2021 at 6:46 am

    RedCoast said:

    Despite their “soothing” properties, aloe and green tea can cause allergic contact dermatitis. It’s rare, but it happens-there are dozens of phytochemicals that can be responsible for it.

    Yes, I know a few people with sensitivity and/or allergic reactions to Aloe, myself included, which is why I never use it in any of my formulations. 

  • OldPerry

    Member
    April 8, 2021 at 1:53 pm

    This is the main problem with using plant extracts. Each of them are made up of dozens of chemicals, any of which can cause allergic reactions.

  • Yulin

    Member
    April 11, 2021 at 11:51 pm

    Thanks for all the feedback everyone.  This is a lot to think about.  I may need to do a complete reformulation.  I think it may be too difficult to pinpoint the issue considering the number of botanicals.   

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