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Dr. Dennis Gross Triple C Peptide Firming Oil

Dr. Dennis Gross Triple C Peptide Firming Oil

Size: 1.0 oz (30ml)

Dr. Dennis Gross Triple C Peptide Firming Oil is a complexion-brightening and hydrating oil formulated with three kinds of vitamin C and peptides to even skin tone, and prevent and repair signs of aging. These powerful actives strengthen your skin at the cellular level, encouraging cells to renew and repair themselves over time. With this luxurious oil, you'll see radiant, healthy-looking skin immediately. Our reviewer loved the results of this firming oil so we're sure it will leave you with your most beautiful, radiant complexion yet.

This Triple C Peptide Firming Oil boasts a triple complex of vitamin C to even out sun damage and pigmentation, while unique lipid-based peptide chains smooth your path to a stronger and firmer complexion. These scientifically advanced ingredients are suspended in wholesome botanical oils, including rosemary leaf, sweet almond and sunflower seed oils, for a deeply nourishing and moisturizing effect. And perhaps best of all, this product is vegan, paraben-free and cruelty-free.

Tested for over 30 days and reviewed by Marta:
When I told Dr Gross that I was most concerned about my lip lines, he was insistent that I incorporate his Triple C Peptide Firming Oil into my regimen. One month in, I am seeing a very subtle decline in my stubborn lip lines and overall my face is more radiant and—surprisingly firmer. Triple C Peptide Firming Oil lives up to its name in every respect.

There are three forms of vitamin C: ascorbyl glucoside, ascorbyl palmitate, and tetrahexyldecyl ascorbate. The first, ascorbyl glucoside is a stable derivative of vitamin C that research has shown to have antioxidant and skin lightening effects (more so than plain ascorbic acid). Ascorbyl palmitate is also known as vitamin C ester and has been shown to boost collagen production (the only vitamin that can do this) and works synergistically with vitamin E (also in this serum).

Since all good things seem to come in threes in this serum, there are three peptides: tetrapeptide-21, palmitoyl tripeptide-1 and palmitoyl tripeptide-28. The first of these goes by the name of TEGO Pep 4-17 and increases collagen synthesis, penetrating the skin well due to its small molecular size. Tripeptide-1 is said to stimulate the synthesis of collagen I and III, fibronectin and laminin. The third peptide is supposed to bind to a growth factor and mimic the natural regeneration of the extracellular matrix.

With collagen-boosting vitamin C and potent peptides, this serum should boast “firming” in its moniker. And deservedly so. After a month of use, I have really noticed the difference — especially around the jawline and the cheeks.

This is where my first (actually only) caveat comes in. If you don’t like oily products, you might not like Tripe C Peptide Firming Oil. Initially, it feels very oily. The important thing to remember is that a very little of this serum should be applied. As a rule, I’m not wild about oils and I was worried that I wouldn’t like this one. But I quickly got over that when I realized how rapidly and evenly it absorbs.

Dr. Gross could have inserted vitamins into his serum’s title as well. In addition to all those Cs, there are vitamins K, A, D and E. I especially like the vitamin K, which you don’t come across all that often as it is supposed to help with spider veins, and vitamin D, in which almost of all of us are deficient. But wait! There’s vitamin H and F as well. I don’t think I knew that the vitamin alphabet was so comprehensive. Vitamin F is linoleic acid and it is found in omega 6 fatty acids, while vitamin H is biotin (also more commonly known as B7).

The great thing about oil-based products is that don’t require all the emulsifiers, solvents and preservatives that go into creams. So there’s nothing to dislike here except for a dab of phenoxyethanol. And there is so, so much to love. This is really the best vitamin C product I have used and I’ll be buying a replacement for sure. Although given that a little goes a long way, that will be some time off. Just remember, if you follow me in giving Dr. Dennis Gross Triple C Peptide Firming Oil a try, that it should be applied sparingly and left for a minute or two before layering any other products above it.

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$ 65.00
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Our Take

When I told Dr Gross that I was most concerned about my lip lines, he was insistent that I incorporate his Triple C Peptide Firming Oil ($62 in the shop) into my regimen (along with the Alpha Beta Peel and Moisture Cushion). One month in, I am seeing a very subtle decline in my stubborn lip lines and... read more

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21 Reviews
  • Robin

    (4 out of 5)

    Seems to have a positive effect on my skin, but it has a very unpleasant odor and is very oily.

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    (5 out of 5)

    I'm 65, with dry, dehydrated skin, loss of elasticity, somewhat sensitive. Have had wonderful results so far with DDG ferulic + retinol eye and face serums (have submitted reviews for them), and added this firming oil for its ingredients and to add some moisture on top of the DDG ferulic+retinol face serum. The feel is extremely light weight, very easy to pat in - not greasy/"oily", looks great after with nice moisturization. So little is required, this bottle will probably last for a long time. I always thought that you couldn't use Retinol, Vitamin C and AHA's at the same time. However, that's a myth and I love using these DDG products together. It has simplified my facial routine from 6 products to 2 and my skin is looking so much healthier, radiant, smaller pores. In LOVE with these particular DDG products and very happy with results so far. Note - this oil is not for use around the eyes, so I use a different moisturizer on top of the DDG eye serum.

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  • Francoise

    (3 out of 5)

    I am putting a 3 star for the following reason:
    - I hated the product on my face. I did not like the smell and the oiliness of it. Further, it gave a puffy face (as well as puffy eyes though I avoided applying in that area) in the morning! ...I suppose one could say it does a great job at plumping!
    - So as not throw it away, I used it on my neck and neckline/decoletage, and oh my!, what a drastic improvement. It blew me away!! I feel I went back 20 years ago with a totally glowing and smooth appearance. The skin is like renewed.

    Ironically, I may very well end up re-ordering the product I hated so much when it runs out...

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  • Angela

    I wanted to love this product - but I made the mistake of not reading the list of ingredients first. I am allergic to aspirin and this contains both Willow Bark and Salicylic Acid so I can't use it. Will pass it along to a friend. Only posting this in the review area to remind others that might be allergic to aspirin to check the list of ingredients in facial products.

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  • Gloria

    (4 out of 5)

    I have recently purchased Dr. Dennis Gross Triple C Peptide Firming Oil and I am using it at night and I am pleasantly surprised at how wonderful my skin looks in the morning. I have not used it long enough to see how it affects the sagging.

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  • Karla

    Hi Marta, I have been using SkinCeuticals CE Ferulic for a number of years now but am trying to move away from it... Do you think that the DDG Triple C Peptide Oil would be a good replacement for the CE Ferulic or? I am 52 and have always taken good care of my skin but am noticing sagging and "hollowing out" around my mouth as well as lip lines. Thanks for your advice and love the TIA website!

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  • Marta

    Hi Dawn, MitoQ is based on one very specific ingredient. So this DDG would not be a replacement but would be complimentary as it brings different ingredients. You would use DDG last, as it is oily and takes longer to absorb than MitoQ. Or use MitoQ mornings and DDG at night.

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  • dawn

    Hi Marta, I have been using MitoQ Anti-Aging Serum, is this a product I could use along with the MitoQ or is it replacement for? I'm not what order to use this and what other products can be used along with it. Thanks!!

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  • Marta

    Hi Sarah, that's a great question. I think that on balance, the amount of vitamin C here, plus your sunscreen would counterbalance any enhanced photosensitivity. Having said that, I use this product at night, but that's mostly because it is an oil and I have a personal preference for using oils at night rather than daytime.

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  • sarah

    (5 out of 5)

    Hi! I couldn't figure out where else to ask my question, so I am just doing so in the review field--sorry :)

    I have been looking for something a little more potent than my current Mad Hippie C serum, and this one seems great for the price. (I have also used/loved Yuli's liquid courage, but it is hard to convince myself to buy over-$100 products.)

    My question concerns use during the day--given the retinol and exfoliating acids, it seems like this could increase my skin's sensitivity to the sun. I would obviously use sunscreen too (LOVE my Suntegrity 5-in-one), but wouldn't these ingredients be safest/best used only at night, or at least partially defeat the purpose of using C during the day to boost my sun protection? Thanks in advance for any thoughts you have!

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  • PamiK

    (5 out of 5)

    This is the first skin product I've ever felt compelled to rave about!! It magically sinks into skin (looking so vibrant when first applied) and is really addressing skin refinement for me. I've applied YBF's Boost and Antioxidants under it, trying for the knockout! My pores are less congested and the largest ones are shrinking! Unbelievable. Also my crows feet are getting less deep. I read another comment on TIA about applying retinol Over an oil to help with penetration, and I've found that to be especially helpful. It keeps me from having flakiness! I could only use retinol cream once a week before I tried it this way, This product actually gets results!!

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  • Sonoko

    (5 out of 5)

    This is an amazing product. It absorbs very fast and I love the smell. After using this oil little over a month, I've noticed the sagging around my cheeks are less, fine lines are less noticeable, skin more hydrated, and some of my discoloration disappeared already. My skin look brighter and healthier overall. I've never expected one single product to work this well at this short amount of time. Can't wait to see how much more difference it will make to my skin with continued use. Thank you.

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  • Dianne

    (5 out of 5)

    I adore this product! I use Dr. Gross glycolic peel first then this lovely oil. I need to remember to wait a bit before applying moisturizer on top. Try this you will really like it. Promise.

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  • Sonoko

    Hello Marta,

    Aw... I see.. It drips on counter top as I carefully yet quickly try to drip the product on my hand. I was hoping if there's a way to stop or slow down the dripping but I suppose this is how the product is. Thanks for the reply. Nonetheless, so far, I am liking the product itself.

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  • Marta

    Hi Sonoko
    I do see what you mean. I treat it more like a dripper than a dropper - I don't squeeze at all. I just let a few drops drip off the pipette into my slightly cupped palm and immediately replace it in the bottle and then dip my finger into the drops for application. It is a little runny for a dropper mechanism, but my workaround means I can control how much I use.

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  • Sonoko

    Hello, I just bought this. The dropper that came with the product does not stop dripping (even without squeezing). Does anyone know how to fix this? I feel I am wasting too much product. Thanks.

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  • Dennis

    (5 out of 5)

    I love this oil! I bought it after Marta's first review. When she said that it was "the best vitamin c serum" she had ever tested, I had to give it a try. I also let my 62 year old mother try it and now she's hooked! She raves about how it makes her face feel like, "silk!" I wear this everyday under my DDG sunblock that Marta also introduced me to. The price of this serum is high, but with ingredients such as TA (my favorite ingredient), plus peptides, and Retinol, which I believe is superior to Retinyl Palmitate, I think it's absolutely worth it.

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  • Ann C

    (5 out of 5)

    I’m in my mid-40s with dry skin and after testing this product my skin feels and looks so healthy and has a superb fresh glow that it is an instant confidence booster. I used the oil both day and night for a few weeks and found that using it in the morning was enough and worked best for me. Applying about 4 drops for my entire face and neck area I was pleasantly surprised at how quickly it absorbed. It took me at least a week to overcome my fear that it would be greasy when applied. Each day I was so thrilled with the outcome, but would hesitate when I would have to apply it again. I think what turned the tide was that each morning when I applied the DDG oil on my face it made my makeup glide on so effortlessly and my complexion was so natural and dewy. None of my fabulous serums or moisturizer had this impact! This was a product I didn’t know I needed but happily discovered it is what my dry skin needs. Within a few weeks my skin was more hydrated, firmer, more supple and revitalized.

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  • Marta

    Hi Christian, I don't really know the answer to your question, but I'll have a stab anyway. For example, an orange has 50mg of vitamin C per 100g of fruit. So you'd need a lot of orange oil extract to get near the 10% concentration of a synthetic form of vitamin C.

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  • Christian

    This vitamin C enriched oil brings to mind something I've been curious to learn, which is how does one compare the amount of naturally occurring vitamin C in an oil (for example, sea buckthorn and grape seed oils) to vitamin C derivatives such as ascorbyl palmitate and tetrahexyldecyl ascorbate among others? I imagine derivatives are designed for better absorption by the skin, however, they have the added difficulty of being converted into ascorbic acid by the body (ascorbic acid is the form of vitamin C found in our skin, but to deliver it in an aqueous solution effectively it must use a relatively low pH.).

    Another question I've been wanting to learn is how to compare the amount of naturally occurring vitamin C in oils to serums that state a percentage of ascorbic acid. For example, 10%, 15%, etc. Can anyone provide information on this?

    Kind Regards,

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  • Kim

    (5 out of 5)

    During the first two weeks of using Dr. Dennis Gross Triple C Peptide Firming Oil, I felt a bit let down. At that point, I wasn't seeing much improvement yet from applying it twice daily. After approximately one month's use, I began to see fine lines on my forehead and lips diminishing, and my skin was becoming so even-toned I couldn't believe it. Some small broken capillaries look barely noticeable now and brown spots are indeed faded. Finally, I could feel comfortable going to the grocery with little more than under eye concealer.

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  • Marta Wohrle

    November 8, 2017

    Marta Wohrle

    Hi Robin, oils would always go after a water-based serum as oils can prevent/ slow down the absorption of another product. I haven't tried it on Firewall as I tend to use it alone at night, so you'll have to experiment. Glad you love it though - so do I!

  • robin makki

    November 5, 2017

    robin makki

    I love this product. I use about 3 full drops on my neck/chest and 3 delicate drops on my face every morning. Absorbs beautifully, and 1 bottle lasts several months. My skin leans dry, but given that this is an oil, I thought that it would be hydrating? Not a complaint, just an observation that I still need a hydrator.

    Now to my questions, I would like to add Medik8 Firewall to my morning routine ... I would imagine that Firewall would go first, and then the Triple C oil??? Does this oil play nice with other serums and products??? Thanks

  • Gaye

    November 5, 2015


    I've been reading TIA for a few years now, and have even ordered recommended products, but have never dared to try any product for a review. I have been skincare-obsessed since high school and now, being 52, have tried more than my share of products. Vitamin C is the one ingredient which has not played nice with my skin. I would LOVE to find a facial product containing Vitamin C which agreed with my skin, since it has so much to offer, especially for anti-aging. Thank you for an opportunity to contribute to your very informative website!

  • Kimberly

    October 27, 2015

    (5 out of 5)

    I tested and reviewed this product for TIA, and loved it. I am on my second bottle now, and the results are as described in Marta's review and mine. One thing I did omit in my review were the results I noticed from the Vitamin K (I assume). I have a few small spider veins on my left cheek which have never gone away with the use of any other product. However, this oil helped the spider veins so much that I no longer need to add concealer to those areas. This is staying in my skincare regimen!

  • Debbie Slack

    September 23, 2015

    Debbie Slack

    I’d love to try ! I’ve used many oils but never one with vitamin C . I love to use oils on my whole body in the winter my skin drys out terribly in the cold winter months.

  • Kim

    September 22, 2015


    I have recently found this website and I love it! I have not tried any products by Dr Dennis Gross yet. This oil might be a good one to try in the winter. I can't wait to try to peel and I would also love to try the antioxidant wipes.

  • Sunnymay

    September 22, 2015


    Vitamin C serum is one of the cornerstones of anti-aging products. Liplines start to become prominent after 45.

  • Dennis

    September 1, 2015


    Marta, you saying that this is the best vitamin C serum you have tried is kind of a big deal. I'm sold.

  • Squalane
  • Silica
  • Silica Silylate
  • Prunus Amygdalus Dulcis (Sweet Almond) Oil
  • Helianthus Annuus (Sunflower) Seed Oil
  • Ascorbyl Glucoside (Vitamin C)
  • Ascorbyl Palmitate (Vitamin C)
  • Tetrahexyldecyl Ascorbate (Vitamin C)
  • Rose Flower Oil
  • Tetrapeptide-21
  • Tocopheryl Acetate (Vitamin E)
  • Rosmarinus Officinalis (Rosemary) Leaf Oil
  • Oenothera Biennis (Evening Primrose) Oil
  • Palmitoyl Tripeptide-1
  • Palmitoyl Tripeptide-28
  • Retinol
  • Emblica Officinalis Fruit Extract
  • Ergocalciferol (Vitamin D)
  • Phytonadione (Vitamin K)
  • Retinyl Palmitate (Vitamin A)
  • Panthenol (Vitamin B)
  • Argania Spinosa Kernel Oil
  • Chlorella Protothecoides Oil
  • Hippophae Rhamnoides Fruit Extract
  • Lavandula Angustifolia (Lavender) Oil
  • Macadamia Ternifolia Seed Oil
  • Persea Gratissima (Avocado) Oil
  • Phospholipids
  • Prunus Armeniaca (Apricot) Kernel Oil
  • Pyrus Malus (Apple) Fruit Extract
  • Salix Alba (Willow) Bark Extract
  • Simmondsia Chinensis (Jojoba) Seed Oil
  • Geranium Maculatum Oil
  • Glycine Soja (Soybean) Oil
  • Sodium Hyaluronate
  • Linoleic Acid (Vitamin F)
  • Biotin (Vitamin H)
  • Butyrospermum Parkii (Shea) Butter Extract
  • Triticum Vulgare (Wheat) Germ Oil
  • Ubiquinone
  • Glycolic Acid
  • Lactic Acid
  • Salicylic Acid
  • Acrylates/Carbamate Copolymer
  • Ethylhexyl Palmitate
  • Ethylhexylglycerin
  • Butylene Glycol
  • Tribehenin
  • Caprylic/Capric Triglyceride
  • Hydroxyethyl Behenamidopropyl Dimonium Chloride
  • Bentonite
  • Corn Starch Modified
  • Mentha Piperita (Peppermint) Oil
  • VP/Eicosene Copolymer
  • Water/Aqua/Eau
  • Polysorbate 20
  • Carbomer
  • Glycerin
  • Curcuma Longa (Turmeric) Root Extract
  • Behenyl Alcohol
  • Sorbitan Isostearate
  • Cyclodextrin
  • Phytic Acid
  • Phenoxyethanol
Shake well. Apply 2-3 drops to clean dry skin in the morning or at night. Pat and gently press into face, neck, and décolleté, ideally after showering.

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