Effica C rapidly absorbing non-acidic vitamin C serum suitable for all skin types including sensitive skin. The biocompatible formula provides gentle and targeted penetration for maximum results. Vitamin C and coenzyme Q10 work in tandem to deliver a potent dose of antioxidants reduce the appearance of fine lines and wrinkles promote even skin tone reduce age spots and protect against UV and environmental damage.
Effica C rapidly absorbing non-acidic vitamin C serum suitable for all skin types including sensitive skin. The biocompatible formula provides gentle and targeted penetration for maximum results. Vitamin C and coenzyme Q10 work in tandem to deliver a potent dose of antioxidants reduce the appearance of fine lines and wrinkles promote even skin tone reduce age spots and protect against UV and environmental damage.
Non-Acidic Vitamin C Serum with 10% ATIP - Effica-C Synergie Skin
Effica C rapidly absorbing non-acidic vitamin C serum suitable for all skin types including sensitive skin. The biocompatible formula provides gentle and targeted penetration for maximum results. Vitamin C and coenzyme Q10 work in tandem to deliver a potent dose of antioxidants reduce the appearance of fine lines and wrinkles promote even skin tone reduce age spots and protect against UV and environmental damage.
Effica C rapidly absorbing non-acidic vitamin C serum suitable for all skin types including sensitive skin. The biocompatible formula provides gentle and targeted penetration for maximum results. Vitamin C and coenzyme Q10 work in tandem to deliver a potent dose of antioxidants reduce the appearance of fine lines and wrinkles promote even skin tone reduce age spots and protect against UV and environmental damage.
in 9 offers
The lowest price for Non-Acidic Vitamin C Serum with 10% ATIP - Effica-C Synergie Skin right now is $130.00 at Synergie Skin, compared across 8 retailers.
The all-time low was $104.00 on 13 Mar 2026 — today's price is 25% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 1 Sept 2026.
Last updated at 01/09/2026 06:39:54
Effica-C: Vitamin C Serum for Sensitive Skin | Synergie Skin
Delivery $8
Effica C
Delivery between Thu – Mon $9.95
Effica C
Delivery between Thu – Mon $9.95
Synergie Skin Mini Effica-C | Vitamin C Serum
Delivery between 7–15 Sept $10
Effica C Vitamin C Serum
Delivery between 5–11 Sept $9.70
Effica-C Vitamin C Serum for Sensitive Skin | Synergie Skin Australia
Delivery $12
Synergie Skin Effica C Vitamin C Serum | Pfeffer Sal Advanced Skin Treatments
Delivery $86.91
Effica C, Vitamin C Serum, Skin Brightening & Anti-aging Face Serum, Australian Made
Delivery between 7–10 Sept $29
Synergie Skin Effica C, Vitamin C Serum, Skin Brightening & Anti-aging Face Serum,
Delivery $39.36
originally posted on synergieskin.com
This is my second bottle of Effica C. I really like the smell of the moisturiser there is s lightness and brightness is leaves on my face. It is also very nourishing and penetrates quickly after applying, making it easy to follow up my foundation. My face looks much smoother and firmer with its use.
originally posted on synergieskin.com
I like this product and would buy it again. It is non-irritant. Thin to apply and absorbs easily. Wears well under sunscreen/makeup. Applies well over my other serum. 1 pump does the face and a second pump does décolleté and neck. I'm seeing improvements in hyperpigmentation on my décolleté. I love that the Synergie range is Australian and quote their active ingredient strengths/concentrations. I love the rewards program and product recycling information.
originally posted on synergieskin.com
Vitamin C is staple in my skincare routine to brighten my sun damaged, pigmented and dull skin. Effica C is my new HG has it does exactly what it says. I Notice a real difference in my skins brightness and tone when I stop using this. Within a few days of reimplementing my skin is brighter and pigment is less noticeable. The east to use pump means the product stays stabilised and there is no hot dog smell like I have experienced with other brands’ Vitamin Cs. I use to be a regular user of SkinCeuticals CE Ferulic but can safely say that I will only by Synergies from now on. I get the same results, if not better and can support and Australian company.
Effica-C: Vitamin C Serum for Sensitive Skin | Synergie Skin
Delivery $8
Effica C
Delivery between Thu – Mon $9.95
Effica C
Delivery between Thu – Mon $9.95
Synergie Skin Mini Effica-C | Vitamin C Serum
Delivery between 7–15 Sept $10
Effica C Vitamin C Serum
Delivery between 5–11 Sept $9.70
This is my second bottle of Effica C. I really like the smell of the moisturiser there is s lightness and brightness is leaves on my face. It is also very nourishing and penetrates quickly after applying, making it easy to follow up my foundation. My face looks much smoother and firmer with its use.
I like this product and would buy it again. It is non-irritant. Thin to apply and absorbs easily. Wears well under sunscreen/makeup. Applies well over my other serum. 1 pump does the face and a second pump does décolleté and neck. I'm seeing improvements in hyperpigmentation on my décolleté. I love that the Synergie range is Australian and quote their active ingredient strengths/concentrations. I love the rewards program and product recycling information.
Vitamin C is staple in my skincare routine to brighten my sun damaged, pigmented and dull skin. Effica C is my new HG has it does exactly what it says. I Notice a real difference in my skins brightness and tone when I stop using this. Within a few days of reimplementing my skin is brighter and pigment is less noticeable. The east to use pump means the product stays stabilised and there is no hot dog smell like I have experienced with other brands’ Vitamin Cs. I use to be a regular user of SkinCeuticals CE Ferulic but can safely say that I will only by Synergies from now on. I get the same results, if not better and can support and Australian company.
Really enjoying this product! It's new to my skin care regime and its been an easy addition that I plan on keeping. It super light weight and easy to apply! I was worried with my sensitive skin I would react but thankfully I haven't. Will continue purchasing!
This product is the perfect fit for my morning routine! I love this gentle way of using vitamin C 🍊 The creamy fresh and lightweight texture of this serum sinks effortless into my skin without leaving a heavy or sticky residue. The perfect product for a pick me up in the morning! Brightening and evening out my complextion while giving me a healthy a radiant glow! This product just works so well with my skin, some vitamin C product's I have tried in the past can be quite heavy and harsh on the skin. This one is my perfect fit! Doesn't break me out ethier! Huge win for me 🙌
Been using this product for years in it's earlier form and now in it's current form. It is staple in my skin care routine making my skin look bright and healthy. Aging well is the key, and Synergie products help with that. I find using a derma roller with my serums produces the best results.
Effica C must have vitamin C serum; it has a Non-acidic formula ideal for all skin types, specifically sensitive skin.It boosts my skin's collagen production and reduces fine lines and uneven skin. It is lightweight and absorbs quickly on my skin.Their Serum’s key ingredient is Ascorbyl tetraisopalmitate, which fights free radicals that cause premature ageing. Boosts collagen production, keeping skin firm.Increases UV protection, helping to reduce sun damage. Lightens dark spots and discolourations.Apply one pump in the morning on cleansed skin, followed by moisture and sunscreen.
Have been using only for a fairly short period of time with a vitamin A also to combat pigmentation/.freckles etc and I think it is working well! It’s definitely a strong product because my skin is still getting used to it and gets a bit red (which I’ve heard is a good sign that it is a good strength and my skin will adjust to it ) my skin is still building my tolerance to the A & C but I’ve noticed my skin visibly looks better and more plump and I’m hoping it will help with pigmentation also
I have started using Effica C over the last few weeks. Being from an Asian decent and prone to pigmention from pregnancy and sun the product has worked wonders.I am starting to see a more ebb skin tone coupled with sun protection I would highly recommended it.Especially for olive skinned
What an excellent serum! I'm glad to find a vitamin C product that is not acidic as i have sensitive skin. Its only been a couple of weeks and I already feel my skin is softer, moist and clearer! I'll definitely continue using this and would definitely recommend anyone looking for a quality vitamin C product!
