Details & care
What it is: A serum that delivers deep hydration while enhancing hair strength.
Who it's for: Ideal for all hair types.
What it does: Crafted with the brand's Age Control Complex, Marine Moisture Complex, hyaluronic acid and ceramides, it delivers deep hydration while enhancing your hairs strength. No need to rinse it out in the morning.
Alterna transcends ordinary hair care with healthy, sensorial rituals and clean, skin care-inspired formulas elevating everyday moments into self-care experiences that transform the hair and delight the senses. The brand's family of mindfully formulated products are designed to deliver performance without compromise—clean beauty that provides an exceptionally luxurious experience at home and proven results in the salon.
How to use: Apply the serum to towel-dried or dry hair before bedtime. Distribute 1-2 pumps throughout mid-lengths to ends. Apply more as needed. No need to rinse out in the morning.
- 3.4 oz.
- Paraben-free; phthalate-free; sulfate-free; oxybenzone-free; mineral oil-free; synthetic color-free; triclosan-free; coal tar-free; formaldehyde-free
- Made in the USA
- Item #10792239
Ingredients
Aqua/Water/Eau, Cetyl Alcohol, Glycerin, Glyceryl Stearate, Hydroxypropyl Starch Phosphate, Behentrimonium Chloride, Phenoxyethanol, Cetearyl Alcohol, Propylene Glycol Dibenzoate, Guar Hydroxypropyltrimonium Chloride, Parfum (Fragrance), Helianthus Annuus (Sunflower) Seed Oil, C13-16 Isoalkane, Ethyl Macadamiate, Cocamidopropyl Betaine, Sorbitan Laurate, Cetrimonium Chloride, Sodium Stearoyl Lactylate, Dimethicone, Heptyl Undecylenate, Isododecane, Butylene Glycol, Linum Usitatissimum (Linseed) Seed Oil, Ethylhexylglycerin, Tocopheryl Acetate, Ethyl Linoleate, DL-Panthenol, Hydrolyzed Quinoa, Ethyl Oleate, Phospholipids, Citric Acid, Dimethiconol, Trisodium Ethylenediamine Disuccinate, Pisum Sativum (Pea) Extract, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Crambe Abyssinica Seed Oil, 1,2-Hexanediol, Persea Gratissima (Avocado) Oil, Dihydroxypropyltrimonium Chloride, Sodium Chloride, Sodium Hydroxide, Benzyl Alcohol, Sodium Hyaluronate, Saccharomyces/Zinc Ferment, Saccharomyces/Copper Ferment, Saccharomyces/Magnesium Ferment, Saccharomyces/Iron Ferment, Saccharomyces/Silicon Ferment, Glycosphingolipids, Potassium Sorbate, Alaria Esculenta Extract, Leuconostoc/Radish Root Ferment Filtrate, Sodium Benzoate, Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate, Caviar Extract, Tocopherol, Potassium Hydroxide, Linalool.
Ingredients are subject to change at the manufacturer's discretion. For the most complete and up-to-date list of ingredients, refer to the product packaging
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ALTERNA®
ALTERNA makes high-performance hair care products inspired by skin care science. Its shampoo, conditioner and hair styling collections are formulated with eco-certified ingredients, like caviar, sea silk, bamboo and kendi oil, that are sustainably harvested to protect the environment. ALTERNA products are free of gluten, sulfates, parabens and synthetic color, and never tested on animals.
Most helpful positive review
Sept 21, 2025
Different
[This review was collected as part of a promotion.] This was new for me since I didn’t do overnight seems because of the length of my hair. But with my hair short it is more effective. It was light and smelled wonderful. I also enjoyed the package color.
hardlovecookie_486
Reposted from influenster.com
Most helpful critical review
July 29, 2025
Didn't notice abything
[This review was collected as part of a promotion.] To be honest I didn't notice a difference while using this product. Kinda bummed out but I did apply it to my hair after showering at night. Oh well....
jessikav11_135
Reposted from influenster.com
5 stars
60%
4 stars
28%
3 stars
9%
2 stars
2%
1 star
1%
Sort by Most Helpful
Size
kornelial_4610
Reposted from influenster.com
Jan 10, 2026
Nice serum with delicate scent
[This review was collected as part of a promotion.] I really enjoyed the overnight serum. I have used other hair products from this brand and I think very highly of this brand. The serum is lightweight and doesn’t weigh your hair down. It has a great, delicate scent. I don’t think I have noticed a drastic difference in my hair but I think I need to use up the whole bottle to judge it properly. I tend to forget to put hair care before bed.
k_michelle_xo_837
Reposted from influenster.com
Sept 23, 2025
Makes your hair feel so soft and luscious!
[This review was collected as part of a promotion.] I received this product complimentary from Influenster. My initial thought was that it smells so good! The packaging is super clean and cute! The cream is smooth and super hydrating even to the skin. I've used this for about 2 weeks now and it makes my hair feel so soft! I recently got a blonde balayage so it definitely needed hydration!
hardlovecookie_486
Reposted from influenster.com
Sept 21, 2025
Different
[This review was collected as part of a promotion.] This was new for me since I didn’t do overnight seems because of the length of my hair. But with my hair short it is more effective. It was light and smelled wonderful. I also enjoyed the package color.
chels20_7839
Reposted from influenster.com
Sept 14, 2025
Frizz Free & Sealed Cuticles
[This review was collected as part of a promotion.] I’ve been applying this while my hair is wet prior to bed. On days I don’t use it there is a drastic difference in the appearance and feel of my hair the next day. I don’t notice a long term difference from wash to wash, but my hair appears more youthful and healthy with it.
joleenssamplesaga_9629
Reposted from influenster.com
Sept 2, 2025
Effortless, taming frizz control
[This review was collected as part of a promotion.] Alterna’s Caviar Anti-Aging Replenishing Moisture Overnight Serum is the kind of product that makes you believe in “effortless” hair again. I applied it before bed, half-expecting my usual morning frizz, and dried ends from a recent blending session at the salon, but instead I woke up with hair that felt softer, smoother, and surprisingly refreshed. No residue on my pillow, no heavy feeling—just lightweight hydration that revived my ends overnight. The results make it feel like a self-care ritual worth keeping on the nightstand. Waking up and being able to brush and go without the need for a flat iron was everything!!
amandame033_3896
Reposted from influenster.com
Sept 2, 2025
Softens Hair
[This review was collected as part of a promotion.] I absolutely love this product and will continue to buy it in the future thanks to Influenster sending me this to try! Lovely packaging, works great and leaves my hair feeling so soft! Great scent and texture. Live everything about this product as it works great for my dry hair.
