A: Because of dryness, oil, dirt build-up, salt, the hair will tangle. And wrong combing method and high temperature iron on the hair also easily cause the hair tangle. We suggest wearing a wrap or bonnet at night, or at least twist it up. Clean your hair with warm water and conditioner after getting up, And use wide tooth comb on the hair, regularly trim the bottom of the hair. A: Of course, our hair is 100% human hair, it can be curled, styled, straightened, can also be dyed to darker colors, bleaching is not recommended. Please note that the temperature of the straight splint should not exceed 180°C to avoid damaging the hair. And before dyeing, please take a small portion of the hair for testing first. A: Absolutely! All the hair cut from young and health women. The hair is 100% human hair ,do not have any synthetic hair or animal hair.you can dye it with natural color ,also can straightened it. IDENTIFICATION OF HAIR TIPS: 1.human hair will be ash after burning and will show white smoke while burning Loose Deep Curly I Tip Hair Material: 100% Brazilian Human Hair Length: 8-30 Inch Weight: 100 strands each pack ,Usually 1-2 packs to add volume and 3-4 packs to make full head I Tip Size: 1cm long x 0.2cm diameter Use of micro ring beads: 5mm x 3mm x 3mm RJ HAIR Itip hair extensions made of 100% Brazilian human hair. unlike synthetic hair, it retains the hair cuticle,blend naturally with your own hair It's application of cold fusion and microlinks makes it popular among people who prefer no heat on hair(high temperature heating may damage hair somehow). We use a special keratin protein during manufacturing. And collocation the Microlinks with silicone will not damage your natural hair or scalp. Soft 100% Human Hair Natural Color can by Dyed Hair can by straightened/Curly Read more Curly Human Hair I Tips Read more