Are they supposed to have the freshness seal?

No, the bottle's are not sealed when you purchase them.

Is it necessary to use the conditioner? I tend to lose more hair whenever I use any kind of conditioner.

To get the best results when using the Nioxin 3 part system it is essential that all 3 products are used as each one has its own job to do. The Cleanser Shampoo rids dirt, debris, environmental impurities, cleaning hair follicles out freeing them from being clogged and deep cleans the scalp. The Scalp Therapy Conditioner stimulates the scalp to promote healthy hair growth along with putting moisture back into the hair and scalp. It also provides a healthy environment to accept the Scalp and Hair Treatment. The Scalp and Hair Treatment increases each individual hair strands diameter, promotes healthy hair growth and stimulates the scalp. I hope this was helpful information to you. Have a good hair day!

I ordered for natural hair and my hair has highlights is it ok to use?

This is a really great question I am happy to assist you with. Natural hair is going to be hair that has no color, perm, relaxers or lighteners. When you highlight your hair that would be chemically treated hair which is going to be our Systems 5 or 6. 5 for lightly thinning and 6 for progressively thinning which means you can see your scalp in the mirror without moving your hair around. Our System 6 has a UV protectant in it to assist with protecting the scalp when you are out in the sun to avoid sunburn. That is the only difference in the formulations. So no you would not want to use System 1 or 2 you would want to choose System 5 or 6 due to the highlights in your hair. This also will provide extra moisturizing to the hair as lightening the hair does tend to dry out the hair. I hope this answered your question today. Have a Wonderful Nioxin Hair Day!

How does help my hair? And is it good for curly hair?

Thank you for contacting Nioxin. We value your brand loyalty. Get denser-looking hair with the innovative Nioxin 3-part System 2 for Natural Hair with Progressed Thinning. This professional set of 3 hair care products helps clean, optimize and treat the hair and scalp. Nioxin’s 3-part System 2 strengthens resilience against damage and breakage, leaving thicker, fuller-looking hair with a healthy shine. Nioxin Cleanser Shampoo 2: removes sebum and environmental residues from the scalp and hair. Nioxin Scalp Therapy Conditioner 2: a lightweight conditioner that helps provide hair resilience and control moisture balance. Nioxin Scalp & Hair Treatment 2: provides a refreshed scalp environment. Ok to use on curly hair.

ASIN	B078YGKR6S
Active Ingredients	Salicylic Acid, salicylic_acid
Best Sellers Rank	#105,896 in Beauty ( See Top 100 in Beauty ) #376 in Scalp Treatments
Brand	NIOXIN
Customer Reviews	4.4 out of 5 stars 11,077 Reviews
Hair Type	Sets & Coffrets
Item Form	Liquid
Item Weight	1.07 Grams
Manufacturer	Nioxin
Material Type Free	Gluten Free
Number of Items	3
Product Benefits	High Gloss
Scent	Lavender, Musk
Special Ingredients	salicylic acid
Unit Count	1 Count

Nioxin System 2 Starter Kit Cleanser, Scalp Therapy & Scalp Treatment natural Hair Progressed Thinning 1 kit

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