TruSkin vs Mad Hippie Vitamin C Serum: Which Is Worth It?
Vitamin C serums are the brightness aisle of skincare: both of these bottles promise a more even-looking tone and antioxidant protection against the dullness that builds up through the day. And both have been around long enough to prove they're not trend products — TruSkin is a perennial top-10 entry in Amazon's Facial Serums category, while Mad Hippie has quietly built a loyal following as the gentler option.
But they take genuinely different approaches. TruSkin is the classic: vitamin C supported by hyaluronic acid and vitamin E in an unscented 2 oz bottle. Mad Hippie uses sodium ascorbyl phosphate — a gentler, more stable vitamin C derivative — plus vitamin E and ferulic acid, in a vegan, cruelty-free formula. We've also included a third option, Olay's Vitamin C + Peptide 24 travel gift set, for anyone who wants to test a brightening routine before committing to a full bottle.
The quick verdict: if you want the proven crowd favorite with the most product for your money, TruSkin is the straightforward pick. If your skin is sensitive, easily irritated, or you shop vegan and cruelty-free, Mad Hippie's gentler formula is the better fit. Traveling or just serum-curious? The Olay set lets you try the category without a full-size commitment. Read on for the full head-to-head.
The two formulas at a glance
| TruSkin Vitamin C Serum | Mad Hippie Vitamin C Serum | Olay Vit C + Peptide 24 Set | |
|---|---|---|---|
| Vitamin C form | Vitamin C (with hyaluronic acid + vitamin E) | Sodium ascorbyl phosphate (a gentler vitamin C derivative) | Vitamin C (with Peptide 24) |
| Size | 2 oz | 1.02 oz | Serum + 1-week Whip moisturizer trial (travel set) |
| Fragrance | Unscented | Not stated in our verified data — check the listing if you're sensitive | Not stated in our verified data — check the listing if you're sensitive |
| Vegan / cruelty-free | Not stated by brand | Yes — vegan and cruelty-free | Not stated by brand |
| Amazon category standing | #6 in Facial Serums | #129 in Facial Serums | Gift/travel set |
| Best for | A first vitamin C serum; fragrance-sensitive shoppers | Sensitive skin; values-driven shoppers | Testing a brightening routine on the go |
Deep dive: TruSkin Vitamin C Serum
TruSkin is the vitamin C serum most people have heard of, and its #6 ranking in Facial Serums is the result of years of consistent sales — not a viral moment. The formula pairs vitamin C with hyaluronic acid and vitamin E, which makes it more comfortable on the skin than vitamin C alone, and it's unscented, which removes one of the biggest barriers for fragrance-sensitive shoppers.
The 2 oz bottle is the largest of the three options here, so per-use it's the most economical path to a daily vitamin C habit. It's a good match for a morning routine: a few drops under sunscreen, where vitamin C's antioxidant protection works hardest.
1. TruSkin Vitamin C Serum (2 oz)
- Vitamin C serum with hyaluronic acid and vitamin E
- Antioxidant formula aimed at brightness and a more even-looking tone
- Unscented
- Ranked #6 in Amazon's Facial Serums category
- Long-running bestseller — proven staying power, not a trend product
- Hyaluronic acid and vitamin E make it more comfortable than vitamin C alone
- Unscented, so it suits fragrance-sensitive skin
- 2 oz bottle — the most product of the three options
- Like all vitamin C serums, it can tingle on sensitive skin — patch test first
- Oxidizes over time; keep it cool, dark, and use it up steadily
- No stated vegan or cruelty-free certification for values-driven shoppers
Price and availability are accurate as of the date/time indicated and are subject to change.
Deep dive: Mad Hippie Vitamin C Serum
Mad Hippie's whole philosophy is gentler skincare, and its vitamin C serum reflects that. Instead of classic ascorbic acid, it uses sodium ascorbyl phosphate (SAP) — a vitamin C derivative designed to be less irritating and more stable. The formula is rounded out with vitamin E and ferulic acid, two well-known antioxidant partners for vitamin C, and the brand is vegan and cruelty-free.
The trade-offs: at 1.02 oz it's roughly half the size of TruSkin's bottle, and its #129 ranking shows it serves a smaller, more specific audience. That's not a mark against it — it's exactly what you'd expect from a niche, values-driven formula. If your skin reacts to most actives, "gentler by design" is a feature worth paying attention to.
2. Mad Hippie Vitamin C Serum (1.02 oz)
- Sodium ascorbyl phosphate — a gentler, more stable vitamin C derivative
- Combined with vitamin E and ferulic acid
- Vegan and cruelty-free
- Ranked #129 in Amazon's Facial Serums category
- Gentlest entry point into vitamin C on this list — best for reactive skin
- Vitamin E and ferulic acid are well-studied antioxidant partners for vitamin C
- Vegan and cruelty-free, clearly stated by the brand
- 1.02 oz — the smallest bottle here, so it runs out faster with daily use
- If you specifically want a classic, potent vitamin C serum, TruSkin is the more direct pick
- Fragrance status isn't in our verified data — check the listing if you're sensitive
Price and availability are accurate as of the date/time indicated and are subject to change.
Also worth a look: Olay Vitamin C + Peptide 24 Travel Gift Set
Not a head-to-head contender, but worth knowing about: this travel set pairs Olay's Vitamin C + Peptide 24 brightening serum with a one-week trial of its Whip moisturizer. It's a low-commitment way to test whether a vitamin C + brightening routine agrees with your skin — especially useful before a trip, when you don't want to decant a full-size serum. As a travel/trial set, it won't replace a dedicated full-size serum for long-term use, and set availability can vary.
3. Olay Vitamin C + Peptide 24 Brightening Serum + Whip Moisturizer Travel Gift Set
- Vitamin C + Peptide 24 brightening serum plus a 1-week Whip moisturizer trial
- Aimed at glow and brightness in a travel-friendly format
- Good way to test a brightening routine before committing to full sizes
- Serum + moisturizer together — a ready-made mini routine
- Travel-friendly; no decanting needed
- Low-commitment way to see if vitamin C suits your skin
- Trial sizes aren't a value buy — for daily long-term use, a full-size serum gives more product
- Set availability can vary; it's not a permanent lineup item
- Not a direct substitute if you want a dedicated high-strength vitamin C serum
Price and availability are accurate as of the date/time indicated and are subject to change.
Which should you buy?
There's no universal winner — pick by your skin and your values:
| Your skin / priority | Our pick | Why |
|---|---|---|
| Sensitive or easily irritated skin | Mad Hippie | Gentler SAP vitamin C derivative, designed for reactive skin |
| New to vitamin C | TruSkin or Mad Hippie | TruSkin for the proven classic; Mad Hippie if you're cautious about irritation |
| Fragrance sensitivity | TruSkin | Unscented — confirmed in our verified data |
| Vegan / cruelty-free shopping | Mad Hippie | Vegan and cruelty-free, clearly stated by the brand |
| Most product for the money | TruSkin | 2 oz — double the size of Mad Hippie's bottle |
| Traveling or testing the category | Olay travel set | Serum + moisturizer trial, no full-bottle commitment |
Frequently asked questions
Can I use both serums together?
No — one vitamin C serum per routine is enough. Layering two vitamin C products increases irritation risk without meaningful benefit. Pick one and use it consistently.
Morning or night: when should I apply vitamin C serum?
Morning, under sunscreen, is the most common recommendation — vitamin C's antioxidant protection complements SPF during the day. Either time works as long as you're consistent and always follow with moisturizer.
Which formula is gentler?
Mad Hippie's sodium ascorbyl phosphate is a vitamin C derivative specifically designed to be gentler and more stable than classic vitamin C forms, so it's the safer starting point for sensitive or reactive skin.
How do I store a vitamin C serum?
Cool, dark, and sealed — light and air speed up oxidation, which turns the serum darker and less effective over time. And whichever you choose, patch test on your jawline before going full-face.
Final thoughts
If you want the proven, no-drama pick, get the TruSkin — it's the #6 facial serum on Amazon for a reason, it's unscented, and the 2 oz bottle is generous. If your skin flinches at most actives or you shop vegan and cruelty-free, the Mad Hippie is the smarter, gentler choice. And if you're not ready to commit, the Olay travel set is a sensible trial run. Whichever you choose: start slowly, use it in the morning under SPF, and give it a full month before judging the glow.